KR20000054172A - Method and apparatus for selling used cars - Google Patents

Abstract

PURPOSE: A method for automatically purchasing used cars is provided to reliably to deal the used cars as a used car seller selects an evaluator and represents objectively evaluated information and price of the used car and a market price to a buyer. CONSTITUTION: A method for automatically purchasing used cars comprises the steps of: receiving information on a used car and an evaluation request message from a seller via a network; transmitting information on the evaluation request message to a selected evaluator according to the message; receiving grade-evaluated information on the used car from the evaluator; setting up a sale price to output to the seller, by modifying a reference price of the used car according to the grades; outputting information on a request for used car searching by a buyer, via the network; and dealing according to a request of the buyer, in reference to the output used car information.

Description

Used car automatic sale method and apparatus {METHOD AND APPARATUS FOR SELLING USED CARS}

The present invention relates to a method and apparatus for automatic sale of used cars, and more particularly, to a method and apparatus for auto buying and selling used cars for presenting objective evaluation information according to the current price and the state of used cars. will be.

In general, when a seller wants to sell or buy a used car, the used car is bought and sold according to the trading procedure of visiting a used car dealer.

In other words, a seller who schedules a sale of a used car registers a used car with a trading company. Accordingly, the used car trading company negotiates a price with the buyer or seller in consideration of a recent transaction price.

Subsequently, the buyer purchases used cars according to the bargained used car price through consultation with a salesperson.

However, in the related art, the seller of a used car cannot confirm the confidence in the evaluation because the evaluation of the used car is performed according to its own evaluation criteria by the used car dealer.

In addition, buyers who want to buy used cars can not be provided with information on the evaluation criteria and evaluation of used cars they want to buy, there is a problem that can not confirm the confidence in the quality of used cars to buy.

Therefore, the present invention has been made in order to solve the problems of the prior art, by using the seller of the second-hand car selected by the evaluator and the objective third-party evaluation to provide the buyer with a reasonable price information reflecting reliable vehicle information and quotes It is an object of the present invention to provide a method and apparatus for automatically selling used cars so as to mutually trust used cars.

In addition, another object of the present invention is to provide a method and apparatus for automatically buying and selling used cars for performing sale and purchase of used cars through the Internet.

In addition, another object of the present invention is to provide a method and apparatus for automatically selling used cars for providing a reference price level according to the evaluation result of used cars by the buyer.

In addition, another object of the present invention is to provide a method and apparatus for buying and selling used cars for performing a standard of quality assurance on the used goods purchased.

1 is a view showing a schematic configuration of a used car trading apparatus according to the present invention.

FIG. 2 is a flowchart for carrying out used car sales of FIG. 1.

Figure 3 is a flow chart for explaining the operation of the seller in the used car sale according to the present invention.

Figure 4 is a flow chart for explaining the operation of the buyer in the used car sale according to the present invention.

5 is a view showing a screen output for the registration application for sale.

6 is a diagram showing a screen output for selecting an evaluation point (or an evaluator).

7 is a view showing a result screen output according to the property registration.

8 is a view showing a listing registration confirmation and correction screen output.

9 is a diagram showing the configuration of a property information database.

10 is a diagram illustrating a configuration of an evaluation point (or evaluation company) information database.

11 is a view showing an evaluation sheet for evaluating the state of used cars.

12 shows evaluation criteria data of an evaluator.

13 is a view showing the application rate of deceleration according to the evaluation grade of the evaluation items.

14 is a view showing the state of applying the deduction according to the evaluation grade of the evaluation item.

FIG. 15 is a diagram illustrating a screen state of a property search result according to the number confirmation procedure; FIG.

FIG. 16 is a diagram illustrating a screen state in response to requesting detailed information of FIG. 15; FIG.

FIG. 17 is a diagram illustrating a screen state according to a click of a purchase request icon of FIG. 16. FIG.

18 is a view showing a screen state for checking and correcting a purchase application.

Fig. 19 is a diagram showing a screen output state for performing a purchase desired reservation.

20 is a diagram illustrating a screen output state according to a search request according to a purchase applicant.

Fig. 21 is a diagram showing a screen output state in accordance with a request for a purchaser wanting purchaser search;

Fig. 22 is a diagram illustrating a screen output state for trading processing.

<Description of the symbols for the main parts of the drawings>

100: seller 102: buyer

104: Evaluator 106: used car sales server

108: Database 110: Used Car Information Database

112: Evaluation company information database

The present invention for achieving the above object is inputted by the plurality of used car sellers connected to the central main server through the network, such as personal information, for sale information and information about the desired appraisers, evaluation date and time, inputted appraisers When the evaluation request information is sent to the evaluator, the evaluator evaluates the used cars according to a predetermined evaluation sheet having a plurality of evaluation items, inputs the evaluation information of the used cars of the plurality of grades accordingly, and sets the preset information according to the input evaluation information. Based on the depreciation rate or depreciation rate based on the average monthly transaction price, the valuation standard price of the offer is presented as the basis of the sale. Providing property information, the buyer's request signal or purchase according to the information It is characterized by providing a method and apparatus for buying and selling used cars in which a sale is made according to a desired reservation signal.

In addition, the present invention provides a method and apparatus for used car sale that provides the buyer with the vehicle evaluation information and the reference price information at the same time, including the buyer's suggested selling price and the condition and grade of the used car presented when the used car for sale. There is a characteristic.

In addition, the present invention is to provide a used vehicle trading method and apparatus to ensure the reliability by performing the warranty for the evaluation item when the evaluation result of the evaluation of the used car for sale and the actual state of the used car is different from another There is a characteristic.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the method and apparatus for automatically sale of used cars according to the present invention will be described in detail. However, the present invention is not limited or limited by the following examples.

1 is a view showing a schematic configuration of a used vehicle auto trading apparatus according to the present invention, Figure 2 is a flow chart for performing the used vehicle automatic trading of FIG.

As shown in FIG. 1, the used vehicle auto trading apparatus according to the present invention is a seller 100 for requesting and selling a predetermined used vehicle over the Internet, a seller 102 for buying a used vehicle, and a seller. An evaluator 104 which is selected by the 100 and performs an evaluation for determining the sale of the used car, requests the appraiser 104 to evaluate the used car input from the seller 100, and is input from the appraiser 104. Used car sales server 106, the seller (100) that receives the evaluation contents of the used cars and determines the used car sales price according to a preset criterion, and then conducts the sale according to the purchase demand from the buyer 102 according to the sale price. It is composed of a database 108 having information about used car information, appraiser 104 provided from.

Here, the database 108 is composed of the used car information database 110 and the appraiser information database 112.

Referring to the operation of the used vehicle auto trading apparatus according to the present invention configured as described above are as follows.

The seller 100 enters information on used cars to be sold after logging in to a used car sale server 106 through an internet connection and registering information on the used car sale server 106, and then evaluates information provided from the used car sale server 106. Select an appraiser who wants to get a rating for used cars entered by.

The used car sales server 106 stores the member information of the seller 100 and the used car information in the used car information database 110, which is input through the login of the seller 100, and is stored in the appraiser information database 112. The seller 100 provides information about the evaluator stored in advance.

In addition, the used car sales server 106 sets the selling price of the used car based on a preset criterion according to the evaluation contents of the used car input from the appraiser 104 and stores the used car information in the used car information database 110.

That is, the evaluator 104 selected by the seller 100 divides the evaluation data of the state of the used vehicle into a plurality of evaluation grades by a predetermined evaluation sheet including a plurality of evaluation items. To send.

The used car sales server 106 sets the selling price by performing a certain ratio of price addition to the reference price of the reference grade of the used car based on the evaluation data transmitted, and the lower grade is compared with the reference price of the reference rating. A percentage of price reduction is performed to set the selling price.

Here, it is apparent that the reference price of the reference grade may be set to the transaction price traded on the used car network last month.

Meanwhile, the used car sales server 106 outputs the previous month's transaction price for the used car input from the seller 100 to the seller 100, and the scores given according to the plurality of grades of the used cars input from the appraiser 104 are obtained. The evaluation data is output to the seller 100. At this time, the ratio of the price to the reference price is set in advance according to the score of the grade of the used car.

Seller 100 determines the selling price of the used car based on the score of the evaluation data and the ratio of the price to the reference price.

On the other hand, the used car sales server 106 determines the state of the used car again with respect to the sale price set through the above-described process. For example, with respect to the price of one million won used car, the condition is classified into normal, good, very good, bad and very bad, and the like is output to the buyer 102 who wants to buy the used car to facilitate the purchase of the buyer 102. do.

Then, the buyer 102 inputs a purchase request signal after logging in to the used car sale server 106, and accordingly inputs a buy decision signal through the information on the used car provided from the used car sale server 106 or Alternatively, a buy reservation signal is input.

At this time, the purchaser 102 performs the transaction according to the sales consultation, deposit payment and transfer of the transfer document, etc. according to the real confirmation of the used car by the purchase decision signal input to perform the transfer of used goods.

The second-hand car sales method according to the present invention configured as described above will be described with reference to FIG.

First, the used car sales server 106 receives information about a used car from the seller 100 of a schedule connected through login and stores the information about the used car in the used car information database 110 (S200), and the seller ( Information about the evaluator is provided from the evaluator information database 114 for evaluating the used vehicle input to the 100.

When the seller 100 selects an evaluator for evaluating the used car entered by the seller, based on the provided evaluator information, the used car sales server 106 e-mails the evaluator 104 of the schedule selected by the seller 100. It transmits the evaluation request content for the used car through the (S202).

At this time, the evaluation request content transmitted to the evaluator 104 is configured to include a summary of the used car requesting the evaluation and the evaluation schedule desired by the seller 100.

That is, the seller 100 is configured to include the evaluation schedule, such as visits to the appraiser 104 to show the real thing to evaluate the used car, or visit the seller 100 of the appraiser 104.

Here, the seller 100 or the evaluator 104 may be performed by e-mail or telephone to adjust or change the evaluation schedule with the other party.

The evaluator 104 performs evaluation on the used car according to the evaluation sheet including the predetermined schedule evaluation item and then transmits the evaluation data to the used car sale server 106 (S204).

At this time, the evaluator 104 rated the used cars for each evaluation item of the evaluation sheet with an average rating of 3 points, good 4 points, very good 5 points, poor 2 points, and very poor 1 points. Perform it separately.

Used car sales server 106 receives the evaluation data according to the grades classified in the form of scores from the appraiser 104 (S204), the evaluation data is higher than the standard quotes according to the case where the overall evaluation grade is higher or lower than the reference grade The selling price of the used car is set high or low (S206).

At this time, the set sale price of the used car is stored in the used car information database 110.

In addition, the used car sale server 106 outputs to the seller 100 the selling price setting process of the used car, that is, the previous month's transaction price, and the evaluation score of the used car input from the appraiser 104 to the seller 100. The output allows the seller 100 to grasp the evaluation of the used car.

Subsequently, when a certain buyer 102 logs in to the used car sales server 106 and requests retrieval of used car information, the used car sales server 106 retrieves used car information stored in the used car information database 110. Optionally output Here, the used car information output includes the sale price of the used car set through the above-described process.

In addition, the used car information output to the buyer 102 may also include state grade information given to each of the used cars in preparation for the sale price of the used car set through the above-described process to facilitate the purchase of the buyer 102. Is self explanatory.

When the buyer 102 inputs a purchase decision signal by the used cars output (S208), the buyer 102 performs a buying and selling operation according to the sales consultation, the actual confirmation of the used car, and the payment of the selling price, and accordingly, the used car is acquired. The transaction is completed by the like (S210).

On the other hand, when the buyer 102 is not stored in the used car information database 110 of the used car that the buyer wants to buy, the used car sales server 106 to the buyer 102 such as name, contact information, e-mail address, etc. It is required to enter personal information and information on used cars to be bought, and if registered as used car for sale requested by the buyer 102, the items registered as used car for sale requested according to the personal information of the buyer 102 entered. Output to buyer 102.

Referring to the accompanying drawings, the sale of a used car in the used car sale according to the present invention configured and operated as described above is as follows.

3 is a flowchart for explaining the operation process of the seller in the used car sales according to the present invention, Figure 4 is a flowchart for explaining the operation of the buyer in used car sales according to the present invention.

Referring to FIG. 3, when the seller 100 for selling a used car logs in through a membership registration to the used car sale server 106 (S300), and requests a sale application for selling (S302), FIG. 5 and FIG. The registration screen for the sale of the same used car is displayed.

In other words, Seller ID, Password, Name, E-mail, Social Security Number, Address, Phone Number, Emergency Contact (Mobile Phone, Pager), Applicant Classification, Car Name, Car Model, Class, Evaluation Reservation Date and Desired Evaluator A screen for selecting, etc. is outputted, and the seller performs a registration for sale of a used car according to the output screen.

In this case, when the evaluation point selection is clicked on in FIG. 5, the evaluation point selection screen shown in FIG. 6 is output.

As shown in FIG. 6, information on the evaluation point registered in the used car sale server 106 is output, and the seller 100 wants to request the evaluation of the used car to be sold based on the output information. Select (S304).

When the evaluation point selection is completed in the above step (S304), a screen indicating the result according to the property registration as shown in Figure 7 is output (S306).

Referring to FIG. 7, an evaluation date, an evaluation point, and an evaluation point phone number for the evaluation of the used vehicle for sale are output along with the phrase, 'the sale vehicle 100 registration for used car for sale' has been completed. An icon is displayed to receive detailed information and directions.

After confirming the evaluation contents by the selected evaluation point (S308) and performs registration by the confirmed evaluation (S310).

Subsequently, when the seller 100 inputs a request signal for confirming the property registration, a screen for confirming and correcting the property registration as shown in FIG. 8 is output according to the seller's resident number, name, ID, and password.

The seller 100 completes the registration of the sale of the used car to be sold by performing confirmation and modification of the registration item through the screen as shown in FIG. 8 (S312).

Used car for sale information registered through the above-described process is stored in the used car information database 110 of the used car sale server 106, the configuration of the used car information database 110 is as shown in FIG.

That is, as shown in Figure 9, the client (seller) ID, the name or name of the client, the e-mail, the date of the request for evaluation, the date of the evaluation request, the personal information such as the telephone number of the client, the evaluator ID, the evaluation reservation field, etc. About 51 kinds of vehicle information such as color, mission, year, month, mileage, vehicle operation, vehicle condition, price information such as seller's desired price, evaluation date and time, association market price and evaluation result, etc. Information and the like.

In addition, it is obvious that the seller 100 can be configured to input image information for the used car for sale.

The seller 100 inputs and selects the requested information through the screen of FIG. 9. In this case, the evaluator information database 112 output according to the seller's selection of the evaluation point has the configuration as shown in FIG. 10.

As shown in FIG. 10, the evaluator ID, the evaluator's Korean and English name, resident registration number, gender, e-mail, mobile phone, and other personal information such as certifications, evaluator's grade, recent evaluation date, number of evaluations, number of claims It consists of evaluator career information.

Through the above-described process, used cars to be sold are registered and the property is evaluated by the selected evaluator. The evaluator performs evaluation according to a predetermined evaluation criteria.

That is, the evaluation is performed by an evaluation sheet having a plurality of evaluation items as shown in FIG. 11, which includes a body, a lamp state, an engine room check, an indoor check, an engine state, a drive system, a steering system, a braking system, an undercarriage system, and a run. Evaluation of used cars registered for sale by evaluation items such as streets.

Here, the evaluation results of each evaluation item in the evaluation sheet is represented by six grades, where the first grade is the best, the second grade is the product, the third grade is the average, the fourth grade is a little bad, the fifth grade is the poor, the Grade 6 is divided into very poor grades.

As described above, the evaluation result of the evaluation sheet of FIG. 11 is transmitted to the used car sales server 106, and the transmitted evaluation result is in the form of a database structure as shown in FIGS. 12A to 12B in the used car information database 110. Stored.

At this time, the second-hand car sales server 106 is a price increase of about 12% in total, based on the rating of the rating point based on the previous month, the second grade is about 6% in total price, The price of second-hand cars registered at the rate of 3rd level is about 20.4% lower than the standard price, 4th level is 40.8% lower, and 6th level is 75.2% lower. Set.

More specifically, as shown in FIG. 13, the body, the state of the lamps, the engine room check, the indoor check, the engine state, the drive system, the steering system, the braking system, the lower body system (noise, ride comfort, etc.) and driving distance By applying the derating rate for each grade according to the first to sixth grades of the evaluation items, etc., the used cars for which the best grade is given to all items are expected to rise by about 12.0% in the current price.

That is, the change of the deceleration of the used vehicle for sale according to the first to sixth grade described above is as shown in Figs. 14A to 14D.

Here, the used car sales server 106 outputs to the seller 100 the month-to-month transaction price of the used car for sale, that is, the reference price and the evaluation grade (or the evaluation score), and the evaluation grade for the used car for sale ( Or an evaluation score) is output to the seller 100 so as to determine the selling price for the used car.

The selling price of the used vehicle for sale, which is set to the highest standard price or the lowest standard price according to the evaluation based on the evaluation criteria data, is stored in the used vehicle information database 110.

The buying operation of the used car by the buyer is described with reference to FIG. 4 as follows.

First, the buyer 102 of the schedule accesses the used car sales server 106 and logs in through membership registration (S400), and then performs a purchase confirmation procedure for buying the used car registered as a sale (S402).

Subsequently, when a certain number of buyers 102 request a property search by the confirmed number of confirmation procedure (S404), a screen state as shown in FIG. 15 is output.

That is, the purchaser 102 may search or search for the type of vehicle, the price of the vehicle, or the like, that is, the area, the mileage, the year, the month, or the like, or the vehicle sold and the vehicle in progress. Perform a search for a listing.

The result according to the search is output, and when detailed information about the result is requested, detailed information as shown in FIG. 16 is output.

As shown in FIG. 16, used vehicle registration date, item number, area, sales status, vehicle name, model, rating class, vehicle characteristics, mission, color, vehicle registration date, mileage, vehicle fuel, next inspection date, evaluation It includes information such as price, final offer price, information on holding options such as air conditioner, power handle, and power window, and an icon for viewing the evaluation price, the final offer price and the evaluation content, and a picture thereof.

At this time, the used car sales server 106 may determine the state of the final present price for the used car as a plurality of, for example, normal, good, very good, bad, very bad, etc. and output to the buyer 102. Is self explanatory.

That is, while the final presentation price of used cars registered as a sale is 5 million causes, the condition of the vehicle may be classified into very good, good, average, bad or very bad, and the buyer 102 may be provided with a purchase guide.

When the buyer 102 clicks on the purchase application icon based on the property information provided, the screen state for the purchase application as shown in FIG. 17 is output.

Referring to Figure 17, the purchase request screen, the seller number, the evaluator ID, the buyer's ID, the password after confirming the buyer's name, resident number, e-mail (e-mail), address, telephone number, emergency contact, real confirmation or It includes contents for requesting a test ride request and selecting additional services.

When the purchaser 102 clicks the confirmation key after inputting and selecting the above-mentioned contents through the screen of FIG. 17, a screen state for checking and correcting the purchase application contents as shown in FIG. 18 is output.

Referring to FIG. 18, the confirmation and correction screen of the purchase application details is provided with the purchase price of the icon and the purchase price for the correction of identification information and additional services such as name, social security number, e-mail, etc. input and selected by the buyer. Financial information such as bank name, account number and account holder.

The buyer 102 of the schedule checks and corrects the purchase application through FIG. 18.

On the other hand, when the buyer 102 is not included in the search result of FIG. 15 because the car to be purchased is not registered as a sale, clicking the icon for the purchase reservation is desired to perform the purchase purchase reservation as shown in FIG. 19. The screen status for is output.

As shown in FIG. 19, the purchase request reservation screen includes personal information such as the name, resident number, e-mail, address, telephone number, etc. of the buyer 102, items of the item to be purchased, that is, a desired vehicle such as a make or a model. It includes content for entering additional choices, such as a desired price range and a mission.

The purchaser 102 for the desired purchase reservation completes the desired purchase purchase by inputting the information on the personal information, the desired vehicle, and additional selection items through FIG. 19.

Here, in the case of requesting a search according to a purchase applicant, a screen state as shown in FIG. 20 is output. As shown in FIG. 20, a purchase application date, a buyer, a phone number, a mobile phone, and sales progress status information are output.

In this case, when the buyer clicks on the buyer's name to obtain detailed information on the buyer, detailed information on the applicant's personal information and additional service selection is output.

In addition, when a request is made to search for a desired purchaser, a screen state as shown in FIG. 21 is output. As shown in FIG. 21, after inputting information such as a car model, a region, a vehicle price, a mission, and the like, the search is performed accordingly. Information about the model, price, name, phone number and mobile phone of the desired purchaser is displayed.

Through the above-described process, a certain buyer performs a purchase application or purchase reservation for the purchase of used cars for sale (S406).

Subsequently, after selecting a purchase item for purchase, i.e., conducting a trading consultation according to a real confirmation, the purchase price of the applied item is determined (S408).

In accordance with the buyer's decision to buy and sell the screen state for the transaction as shown in Fig. 22, the buyer is processed according to the contents and the payment for the sale (S410).

That is, referring to FIG. 22, the seller's personal information such as the sale number, the sale number, the sales representative ID, the evaluator ID, the evaluator's name, the seller's ID and the name, the buyer's information such as the buyer's ID, the name and the resident's number, the vehicle number, and the evaluation Includes information such as price, suggested price and vehicle registration number, payment information for payment of property such as fee, remittance date, collection date, bank name, account number.

Subsequently, according to the information provided through the above screen, the purchaser deposits the price of the property and various documents such as transfer of the name are sent to the buyer according to the procedure, and then the sale of the property is completed (S412, S414).

As described above, it is obvious that the method and apparatus for automatically buying and selling used cars according to the present invention may additionally implement a guarantee for an evaluation item when the actual vehicle state of the evaluation result for the used vehicle is different.

Used car trading method and apparatus according to the present invention inputs the seller's personal information, detailed information on the used car and the desired evaluation point (or appraiser) selection information of the used car to sell from the plurality of sellers to sell used cars Receive a request for evaluation, and send the request for evaluation to the inputted evaluation scorer (or evaluator) by e-mail. The evaluator who receives the request for evaluation may change or revise the evaluation date and time through the appointment with the seller, and the evaluation of the property is performed in multiple grades through the standard data.

Therefore, the present invention has the effect of improving the convenience and reliability of the evaluation because the seller performs the evaluation of the sale by the desired date and time and the desired evaluation point (or assessor) selection.

In addition, the present invention sets the sales quotation by the rate of depreciation or deduction for the current market price set in advance according to the grade evaluated by the evaluation point (or the appraiser), thereby providing a more accurate valuation basis for the valuation and providing a basis for the sale price. It is also set to be so effective to improve the objectivity of the sale of used goods.

In addition, the present invention can directly check the details of the evaluation results for the seller to buy the item, there is an effect that can improve the reliability of the buyer.

In addition, the present invention is because the sale and purchase of second-hand cars are made through a network such as the Internet, there is an effect that can improve the convenience for the seller to the seller and buyer.

In addition, the present invention by setting the sale price by reflecting the actual transaction price in a way to reflect the actual transaction price in the field by presenting the average transaction price of the previous month as the sales reference price and the details of the used car at the same time as the evaluation information of the used car This also has the effect of improving reliability.

In addition, the present invention provides the buyer with the condition evaluation grade information compared to the sale price of the used used car has the effect of improving the convenience of the buyer buy used cars.

In addition, the present invention has an effect of improving the reliability of the used car evaluation because it provides a quality assurance for the evaluated items of the used car.

Claims (18)

Receiving a used vehicle sale information and a sale evaluation requirement message from a seller through a network; Transmitting property evaluation request information to a selected evaluator according to the property evaluation requirement message; Receiving evaluation information on the used car evaluated in a plurality of grades from the evaluator; Setting the selling price according to the reference price of the requested used vehicle for sale according to the grade of the evaluation information and outputting the selling price to the seller; Outputting the sale information according to the buyer's used vehicle sale search request through the network; And Performing a trading according to the purchase demand of the buyer according to the output information Used car auto sales method, including. The method of claim 1, Receiving a used vehicle for sale information and sale evaluation requirements message from the seller is Receiving the seller's personal information and the used car for sale information after applying for the for sale information; Receiving an input of an evaluator selection request signal for evaluating the used vehicle for sale; Receiving evaluation date information of a desired evaluator and used cars according to the evaluator information output according to the evaluator selection request signal; Used car auto trading method that comprises more. The method of claim 1, Setting the sale price of the used car Set a reference grade among the plurality of grades of the evaluation data input from the evaluator to have the reference price of the used car, A grade higher than the reference grade applies at least one of a certain addition ratio or amount to the reference price, The lower grade than the reference grade is applied to at least one of a certain reduction ratio or amount of money to the reference price. The method of claim 3, The reference price is a used car auto trading method, characterized in that the last month's trading price of the used car. The method of claim 1, To set the sale price of used cars Outputting the previous month's transaction price of the used vehicle to the seller; Outputting the plurality of evaluation scores according to the evaluation data from the appraiser to the seller; Outputting to the seller a sale price in which at least one of a predetermined ratio or a price according to the evaluation score is applied to the previous month's transaction price of the used car; Used car auto trading method that comprises more. The method of claim 1, And outputting the evaluation information on the used car for sale requested by the plurality of buyers, The evaluation information is used car auto trading method characterized in that it comprises the buyer convenience information given the condition grade of the used car compared to the set sale price. The method of claim 1, If there is no used car for sale information corresponding to the item search request input from the buyer, Receiving information on the buyer's personal information and requested property; If the used car for sale corresponding to the requested information is registered, transmitting the property registration information of the used car according to the personal information of the buyer Used car auto trading method that comprises more. The method of claim 1, Performing an assurance according to at least one of an extension of a warranty period or a reduction of a premium when an error of the used vehicle evaluation by the evaluator occurs; Used car auto trading method that comprises more. The method of claim 1, And the network is the internet. A database for storing used vehicle sale information input from the seller through a network and information on an evaluator for evaluating the used vehicle; Receiving a plurality of grades of evaluation information on the used car for sale from the appraiser, and setting the selling price of the used car for sale by adding or subtracting a preset reference price according to the evaluation information, In accordance with a request signal of a plurality of buyers connected through a network, the information on the sale according to the set selling price is selectively obtained from a database. Used car sales server that performs the sale of the property in accordance with the purchase signal of the buyer in accordance with the offer information Used car marketing device is configured to include. The method of claim 10, The used car sales server Means for storing information in the database about used vehicle for sale input through the network; Means for setting the rate of deceleration or deceleration set in advance according to the evaluation information of the used car for sale from the appraiser; Means for calculating and setting a selling price according to the reference price of the article according to the set derating rate or deduction Used car marketing device is configured to include more. The method of claim 10, The used car sales server Means for setting a reference grade among a plurality of grades of evaluation data input from the evaluator to the reference price of the used vehicle for sale; Means for setting the highest reference price of the used vehicle by applying at least one of a predetermined addition rate or an amount to the reference price; Means for setting the lowest reference price of the used vehicle by applying at least one of a predetermined reduction ratio or an amount to the reference price. Used car auto sale device made more. The method of claim 12, The reference price is a used car auto trading device, characterized in that the last month's trading price of the used car sale. The method of claim 10, The used car sales server Means for outputting the previous month's transaction price of the used vehicle for sale to the seller; Means for outputting to said seller a plurality of evaluation scores in accordance with evaluation data from said appraiser; Means for outputting the selling price of the used car for sale to the seller by applying at least one of a predetermined ratio or a price according to the evaluation score to the previous month's transaction price of the used car; Used car auto marketing device composed including. The method of claim 10, Means for outputting evaluation information on the used car for sale requested by the buyer; The evaluation information is a used vehicle auto trading method comprising the buyer convenience information that is given a status grade compared to the sale price of the used car for sale. The method of claim 10, Means for receiving the personal information of the buyer and the requested property information when there is no used vehicle property information corresponding to the property search request inputted from the buyer; Means for transmitting the property registration information of the used vehicle according to the personal information of the buyer when the used vehicle listing corresponding to the requested sale information is registered Used car auto marketing device is configured to include more. The method of claim 10, The used car sales server And a means for performing a warranty according to at least one of an extension of a warranty period or a reduction of a premium of used cars when an error of the used car evaluation by the evaluator occurs. Performing evaluation of a plurality of grades of used cars according to preset criteria according to used car for sale information input from the seller through the network; Setting a selling price based on a reference price of the input used car for sale according to a plurality of grades of the used car and outputting the selling price to the seller; Performing a selective sale through the network according to the output used car for sale information corresponding to the buyer's request Used car auto sales method, including.