KR20000063995A - system and method for selling and estimating price of used automobile on network - Google Patents

Abstract

PURPOSE: A system and a method for the price appraisement and trade of a used car using networks are provided so that a purchaser and a seller can carry out a used car transaction directly using networks. CONSTITUTION: If a user accesses a main server through networks, the homepage is displayed(20) and executes member authentication(30). Completing member authentication, the user searches the latest used car current status table(39). If the user is a seller who wants to sell his used car, he has to click a sale button(41) to appraise the price of the used car using a used car appraisement system(43). If the user is a purchaser who wants to purchase a used car, he can click a purchase button(42). The purchaser inputs purchase car information to buy a desired used car(48).

Description

System and method for selling and estimating price of used automobile on network}

The present invention relates to the sale and sale of used cars using a network, and in particular, not only connects a person who wants to sell a used car with a person who wants to buy a used car, but also sells the price according to the status of the selling vehicle in real time. A system and method for displaying the same are provided.

In general, in the case of selling used cars, used car sales are made by advertisements of living information magazines distributed by regions, or used car dealers scattered in the provinces.

In other words, buyers of used cars are purchased from the seller or trading company using mass media such as advertising, and the trading company buys used cars preferentially from used car sellers and then displays and sells the used cars to used car buyers. .

However, in the trading method formed as described above, the trading firm not only needs a wide space to display and sell used cars, but also increases the fixed cost accordingly because the trading firm needs to purchase used cars. In addition, there is a spatial difficulty that can not be used for a variety of reasons, such as transportation costs and time of the vehicle for the sale or purchase of a remote location.

Therefore, in order to solve the above problems, a lot of used car trading sites have been created recently using the Internet, and this method has the advantage of being able to sell used cars anytime and anywhere without being restricted by time and space.

However, there are various problems in the used car trading method in the virtual space using the Internet as described above.

First, information on used vehicles for sale is not restricted by time and space on the Internet, but used vehicles are secured by the server operator and supplied when the buyer wants them. Therefore, there is a problem in distribution that a large space is required, such as a direct used car trading method by a conventional dealer.

Second, since the server operator checks the vehicle status and evaluates the amount of the vehicle, the used vehicle that is to be sold is transported to the place where the server operator is located, or the evaluating agent must be dispatched. In addition, there is a problem in that it is still inconvenient for those who wish to sell or buy a vehicle in a remote place due to the above-mentioned traffic occurring in a large city with a close population.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to provide a method that the vehicle owner can directly calculate the evaluation amount of the used car by the standardized program for the price of the used car. The present invention provides a system and a method in which used vehicle sellers and buyers can directly execute used car trading transactions using a network.

Figure 1 is a schematic diagram showing an embodiment of a mediation system of used car trading using a network.

FIG. 2 is a general flow diagram schematically showing a brokerage procedure of a used vehicle by a user in the system according to FIG.

3 shows an overall flowchart of the system according to FIG. 1.

4 is a flow chart showing a user registration procedure in the system according to FIG. 1;

FIG. 5 is a flow chart schematically showing a price evaluation procedure of a selling vehicle in the system according to FIG. 1. FIG.

FIG. 6 is shown in one embodiment to facilitate entering the exchanged portion of the selling vehicle in the system according to FIG. 5;

FIG. 7 is shown in one embodiment to facilitate entering a sheet metal / paint portion of a selling vehicle in the system according to FIG. 5;

8 is a flowchart illustrating a payment process in the system according to FIG. 1.

* Description of the symbols for the main parts of the drawings *

10: center site, 11: web server,

13: Homepage, D1: Member Information Database,

D2: vehicle price list database, D3: vehicle evaluation database,

D4: vehicle sales database, 30: membership certification,

43: calculate the vehicle valuation amount, 45: enter the information of the selling vehicle,

48: enter the purchase vehicle information, 60: down the trading party information,

70: down vehicle sales information, 80: application for direct vehicle evaluation

This object is achieved by the present invention, and according to an aspect of the present invention, a price evaluation of a used car including a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites; In the sales system, the center site, the member management unit for updating and registering the member registration information and the user registration information accessed from the member site, the data of the used car price list displayed separately by vehicle name, year by year, status Vehicle price section for updating and storing the vehicle, vehicle evaluation unit for storing the vehicle price calculation means for calculating the vehicle price based on the data of each item of the used cars input from the member site, and administrative and procedural necessary for used car sales It consists of a vehicle sales information section, in which data of necessary information is stored and updated. .

According to another aspect of the present invention, a price evaluation and sale method for a used car including a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites is connected to the center site. Member authentication step of determining whether the user is a member authentication, used car price price table guide step that displays the market price is formed in real time divided by vehicle name, year by year, and vehicle status, the seller connected to the center site sequentially A used vehicle evaluation step of inputting the used car status of the seller in accordance with the item order shown by, calculating the evaluation amount of the used car, a vehicle input search step of searching for the used vehicle desired by the user, and the user to the desired condition The party information download step is performed to download the information of the correct trading party.

According to yet another aspect of the present invention, a price evaluation method for a used car including a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites is connected to the center site. A first step of inputting basic information of a vehicle to be sold by a user; a second step of processing and outputting an evaluation amount at the center site according to the first step; and a confirmation item basically mounted on the vehicle to be sold by the seller; A third step of inputting an option condition, a fourth step of processing and outputting an evaluation amount at the center site according to the third step, a fifth step of inputting an exterior item of a vehicle to be sold by the seller, and the fifth step According to step 5 is characterized in that the sixth step is processed and output the evaluation amount in the center site.

In this case, after the sixth step, a seventh step, which is a product value evaluation step of evaluating a specific part of the vehicle to be sold by the expert, the assessment evaluator of the used car, further includes a matter evaluator using the network. It can be characterized by.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment according to the present invention.

1 is a block diagram schematically showing an embodiment of a mediation system for used car trafficking using a network according to the present invention, wherein a plurality of member sites are connected to an Internet service provider (ISP) through the Internet.

The ISP is connected to the member site and the Internet, and inputs and outputs of used vehicle for sale information and procedural information necessary for searching and vehicle sales, the homepage 13, the web server 11 and a plurality of databases (D1, D2) , D3, D4) and the like.

The homepage 13 is a homepage 13 of the present invention serving as an Internet service, and has a user identification information input unit that accepts at least user identification information, for example, a user identification number (ID).

The web server 11 transmits an HTML page or a vehicle information file requested from the member site 110 to the member site 110 through a PPP server host, and transmits the user information recorded on the homepage 13. Receive and output

In addition, the center site 10 displays a member information database (D1) for updating and registering member authentication information and membership registration information of the user connected from the member site 110, and is classified by vehicle name, year, and status. Vehicle vehicle table database (D2) for updating and storing the data of the used car price list to be stored, and a vehicle value storing means for calculating the vehicle price based on the data for each item of the used car input from the member site 110 is stored An evaluation database D3, and a vehicle sales information database D4 in which data of administrative and procedurally necessary information required for selling used cars is stored and updated.

2 is a general flow diagram schematically showing the sales brokerage procedure of a used vehicle by a user connected to the member site 110 in the system according to the present invention.

As shown in the figure, there is a member authentication step (S10) for determining whether to authenticate the user of the user accessing the center site (10). However, even if you are not a member, you can use this system as a general user, and information about newly registered members is updated and registered in the member information database D1.

The next step is the used car price information table guide step (S20), which displays the used vehicle price tables currently announced by various organizations by vehicle name, year, and vehicle status. Here, the price list presented on the center site is displayed by combining the price made at the current used vehicle store, not the evaluation amount of the individual vehicle.

Here, the member who wants to sell the used vehicle goes through the used vehicle evaluation step (S30) of calculating the evaluation amount of the used vehicle to be sold by inputting the state of the used vehicle according to the order of the items appearing sequentially. In S30) is operated by an independent vehicle evaluation system to be described later. After that, the member who wishes to sell the member who has completed the valuation of the own vehicle enters information on the vehicle sold (S40), and on the contrary, the member who wants to purchase the used vehicle enters vehicle information that searches for information on the used vehicles classified by items. And performing a search step (S40), and searching for information desired by the seller or the buyer in the process, and then goes through a payment step (S50) of paying a fee generated to download it.

The user who paid the predetermined fee in the payment step (S50) is to download the transaction party information (S60), and also to apply for a direct evaluation of the sale vehicle (S70) and administrative procedures required for the vehicle sales There is (S80), the step (S70, S80) can be selectively performed according to the needs of the user. As described above, the user who downloads the information of the trading party (S60) is used car trading through direct contact of the trading party.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 8, and FIG. 3 is an overall flowchart schematically showing the whole of the system according to the embodiment of FIG. 1.

As shown in the figure, when a user connects to the main server via a network, a homepage is displayed, and a member authentication step of authenticating whether the connected user is a regular member is performed.

The user's member authentication and membership registration procedure will be described with reference to FIG. 4. The user who accesses the center site 10 in the member site 110 determines the member certification according to the member information of the member information database D1 (C1), and the authenticated member goes to the vehicle tax schedule guide process 39. In progress, the user who has been denied authentication as a member inquires about the new member willingness to register (C3) and creates a member registration (C5). It is not necessary to register as a member in the above process, and a user who refuses to register can be used as a general user (C9). The member who completes the member registration form (C5) once again confirms the member registration intention (C7), and newly generated data is updated and stored in the member information database D1.

After completing the member authentication step (S10), the user can search for the most recent used car price table. The used car price table is displayed by being divided into vehicle name, year, etc., and the data used in the used car price price table is a vehicle price table. Use data stored in database D2.

A vehicle seller wishing to sell a used vehicle can evaluate the vehicle price by clicking the Sell 41 item on the vehicle evaluation system. The vehicle evaluation system automatically calculates a vehicle evaluation amount when sequentially inputting information of a vehicle to be evaluated in a displayed item.

The vehicle evaluation amount calculation is calculated by the system operated by the center site 10, which will be described in more detail with reference to FIGS. 5 to 7 as follows.

The basic information inputted by the user who accesses the center site 10 to enter the basic information of the vehicle to sell is inputted by the manufacturer, vehicle name, model name, transmission type, year, month type, color, and mileage of the vehicle to be sold. (e1).

Then, the base price is calculated at the center site 10 (e2), and the price according to the manufacturer, vehicle name, model name, transmission type, and year is calculated based on the market price formed in real time. At this time, the market price is to perform the upgrade by setting a predetermined period in the center site 10 and based on the price that is formed off-line, it is determined with reference to the publication issued by an authorized institution.

And, the first price is calculated according to the lunar eclipse, color, and mileage input in the step (e3), the price according to the lunar eclipse is divided into January-February, March-October, November-December This is to resolve the buyer's irrationality.

In addition, the price according to the color input in the step is calculated by reducing a certain amount in the case of a particular color (for example, a pink large passenger car (Grand Motor manufactured by Hyundai Motor Co., Ltd.)), not a color that is widely popular according to the vehicle name, The price according to the mileage is calculated by the method set on the center site 10 after calculating the car of the year and the year listed on the registration certificate of the used vehicle from the current month. The yearly mileage of the vehicle is based on 20000km Since the service is made, the price of the mileage is calculated based on this (e3).

Thereafter, the seller enters a confirmation item that is basically installed on the vehicle to be sold, and optional conditions. The confirmation item to be input is classified into a spare tire, a basic tool, an instruction manual, a car account book, and a vehicle inspection before and after a predetermined period. In particular, the inspection of the vehicle is determined by a certain period (about 45 days) based on the current date, and the price is added or decreased.

And, the optional conditions input in the step, the power handle, air conditioner, aluminum wheel, leather seat, manual and electric sunroof, single and dual airbags, side airbags, ABS (anti-lock) preset in the center site (10) Classified into brake system (ECS), electronic control suspension system (CDS), compact disc player (CDP), traction control system (TCS), driver's seat and passenger's seat, rear seat electric seat, navigation system, AV system, soundproofing, roof carrier, etc. do.

At this time, the above options are classified into basic options, additional options, and deletion options. The basic options are irrelevant to the options that are basically installed at the time of shipment of the vehicle. It is formed on the premise that the additional option is additionally installed by the customer, and the price of the installed option is added to the base price, and the deleted option is an option that cannot be installed or difficult to calculate even if it is installed according to the vehicle name. The secondary price is then calculated (e5).

For example, in the case of Avante 1.5 manufactured by Hyundai Motor Co., Ltd., the basic options are power handle and air conditioner, and the additional options are aluminum wheel, leather seat, manual and electric sunroof, single and dual airbags, ABS, ECS, CDP. The delete option is a side airbag, a TCS, a driver's seat and a passenger seat electric seat, a rear seat electric seat, a navigation system, an AV system, sound insulation, and a roof carrier.

In the case of Leganza 2,0 manufactured by Daewoo Motor Co., Ltd., the basic options are power handle, air conditioner and aluminum wheel, and additional options are leather seat, manual and electric sunroof, single and dual airbags, ABS, ECS, CDP, navigation system, AV system, delete options are side airbag, TCS, driver's seat and front passenger's seat, rear seat's electric seat, soundproof, roof carrier, and the setting of these options is set in the center site (10). Done.

In addition, the seller inputs the exterior details of the vehicle to be sold, which is classified into the exchanged part and the sheet metal / painted part, and is inputted by the user with reference to FIGS. 6 and 7.

In other words, the parts replaced after the vehicle accident as shown in FIG. 6 include front and rear bumpers A and B, left and right front fenders C and D, left and right quarter panels E and F, and left and right front doors G and H. Left and right rear doors (I, J), bonnet (K), trunk (L), roof (M), left and right side step panels (S, T), front support panel (V), trunk panel (W), left and right center door The panel (X, Y), the housing (Z) is divided into the housing (Z) is also referred to as a wheel house including a panel assembly, fender airpron, etc., the price calculation according to the respective parts are as follows.

That is, the most important price calculation of the housing (Z) in the vehicle accident is the front and rear bumpers (A, B), left and right front fenders (C, D), left and right quarter panels (E, F), left and right front doors (G, H), Left and right rear doors (I, J), bonnet (K), trunk (L), roof (M), left and right side step panels (S, T), front support panel (V), trunk panel (W), left and right center door panels Include the price of (X, Y).

In addition, the price calculation of the front support panel (V) includes the price of the front bumper (A), left and right front fenders (C, D), bonnet (K), the trunk panel (W) is the rear bumper ( B), the left and right quarter panels (E, F), the price of the trunk (L), the left center door panel (X) is left front door (G), left rear door (I), left side step panel (S) It includes.

In addition, the right center door panel Y includes a right front door H, a right rear door J, and a right side step panel T to calculate a price in a method set on the center site 10.

And, as shown in Figure 7, the sheet metal / to be painted parts of the front and rear bumpers (A, B), left and right front fenders (C, D), left and right quarter panels (E, F), left and right front doors (G, H) ), Left and right rear doors (I, J), bonnet (K), trunk (L), loop (M), left and right side step panels (S, T). The price is calculated by the method set on the center site 10 and this data is stored in the vehicle evaluation database D3. At this time, if the gloss of the painted portion or the entire portion is required, the predetermined price is reduced.

In this way, take the June 1997 white Sonata III 2.0 manufactured by Hyundai Motor Co., Ltd. (manual transmission with 58000 km mileage, power handle, air conditioner, aluminum wheel). First of all, the user inputs basic information about the vehicle. At this time, the basic options are a power handle, an air conditioner, an aluminum wheel, and a single airbag, and these options are designated at the center site 10.

Then, the vehicle price is calculated based on the vehicle price list D2 at a base price of 5.7 million won (as of 2000, June) (e2). After that, there is no change in the price according to lunar eclipse and color in the first price calculation, and 7,904 (won) is added in the mileage.

In other words, 2000, June (current date)-1997, June (date of delivery) = 36 (month)

36 × 1666 (miles per month) = 59976 (km)

59976-58000 (mileage) = 1976

1976 × 4 (coefficient set by the center site) = +7,904 (won)

Therefore, the primary price is estimated at 5,707,904 won (e3).

After that, the user inputs the checked items such as spare tires, basic tools, instruction manuals, and the account book, but lost the user's manual, and deducted 10,000 won and recorded the account book, adding 20,000 won, and the basic options such as power handle, air conditioner, Since only the aluminum wheels are installed, the price for a single air bag is 158,250 won. In this case, the amount to be added or decreased is determined by the price preset in the center site 10.

Therefore, the secondary price is estimated at 5,707,904-148,250 = 5,559,654 (won) (e4).

Next, the user replaced the front support panel (V) of the vehicle and reduced 779,118 won. The replacement price of these front support panels was as described above, the front bumper (A), the left and right front fenders (C, D), and the bonnet (K). It is a price including the price of this price is determined by the price predetermined in the center site (10).

In addition, since the bonnet (K) is required for sheet metal and polished work, 52,750 won and 50,000 won are reduced, respectively, and this price reflects the amount required for a normal vehicle maintenance center.

In conclusion, the evaluation amount of the above-mentioned June 1997 white Sonata III 2.0 (manual transmission with 58000km) is calculated as 4,677,786 (KRW) (2000, June) (e7).

When compared with the above embodiment based on 2000, August is as follows.

That is, the June 1997 white Sonata III 2.0 (manual transmission equipped, 58000 km) manufactured by Hyundai Motor Co., Ltd. has no change in price compared to the market price of two months ago. Based on D2), the base price is estimated at 5.7 million won (as of August 2000) (e2). After that, there is no change in the price according to lunar eclipse and color in the first price calculation, and 21,232 (won) is added in the mileage.

That is, 2000, August (current date)-1997, June (date of delivery) = 38 (month)

38 × 1666 (miles per month) = 63308 (km)

63308-58000 (mileage) = 5308

5308 × 4 (factor set at the center site) = +21,232 (won)

Therefore, the primary price is estimated at 5,721,232 won (e3).

Since the price is the same as the above method, it is omitted and consequently only the price for the mileage is changed. Consequently, the white Sonata III 2.0 (manual transmission with 58000 km) of the June 1997 model is concluded. The evaluation amount is calculated as 4,691,114 (KRW) (as of August 2000) (e7).

In another embodiment, the November 1995 Purple New Grandeur 2.0 EX manufactured by Hyundai Motor Co., Ltd. (with automatic transmission, driving distance is 150,000 km, options are power handle, air conditioner, aluminum wheel, leather seat, ABS, When looking at a vehicle with a single airbag, CDP, and AV system, the user first enters the basics for the vehicle, with the default options being the power handle, air conditioner, aluminum wheel, leather seat, dual airbag, ABS , Driver's seat, rear seat's seat.

Then, based on the vehicle price list D2, the base price of the vehicle is estimated at 7.4 million won (2000, August) (e2). After that, 140,000 won will be added from the lunar eclipse and 154,000 won will be subtracted from the lunar eclipse, and 275,190 won will be reduced from the mileage.

In other words, 2000, August (current date)-1995, November (date of delivery) = 57 (month)

57 × 1666 (miles per month) = 94962 (km)

94962-150000 (mileage) = -55038

-55038 × 5 (coefficient set by the center site) = -275,190 (won)

Therefore, the primary price is estimated at 7,110,810 won (e3).

After that, the user inputs the checked items such as spare tires, basic tools, instruction manuals, and the bookkeeping book, but the bookkeeping book is not recorded.There is no increase or decrease of the amount. Rather than installing the original) and rear seat electric seats (-250,000 won), an unselected single airbag (+167,250 won), CDP (+120,000 won) and AV system (+400,000 won) were added and subtracted. The circle is subtracted. In this case, the amount to be added or decreased is determined by the price preset in the center site 10.

Therefore, the secondary price is estimated at 7,110,810-209,450 = 6,901,360 (W) (e4).

Next, the user swapped the vehicle's right center door panel (Y) (-870,258 won) with the right quarter panel (F) (-186,484) (the right quarter panel is Replacement is not included, so the replacement of the side step panel on the right and the front door on the right is not included.In conclusion, the November 1995 1995 Purple New Grandeur 2.0EX (with automatic transmission, mileage 150000 km) The evaluation amount of the vehicle is calculated as 5,844,618 (won) (e7).

In addition, if the vehicle seller wants a more accurate and verifiable calculation price after completing all the above steps (e7) in the same manner as described above, the value of a product for evaluating a specific portion of the vehicle to be sold by a specialist, a used car assessment appraiser. The evaluation step can be performed.

At this time, the assessor may visit the seller to assess the vehicle or the seller may move the vehicle to visit the assessor, but the seller may directly input the state of the vehicle using the network. That is, it is possible to transmit as an image through a network using a webcam or the like.

Inputs include: engine, manual and automatic transmission, muffler, battery condition, vehicle built-in condition, cracks in the entire glass, operation and cracks of the headlamp and rear combination lamps, breakage and operation of the outside mirrors, tires The wear state and the noise state of the vehicle body are input and thus the price is calculated on the center site 10.

That is, in the engine state, whether the engine vibration is severely generated, whether or not a large amount of black or white exhaust gas is discharged from the muffler, whether or not smooth acceleration is achieved, and whether the driver feels weak engine power. Whether the idling state is unstable or whether the engine is rumbling while driving is entered.

In the case of a manual transmission, inputs are made of excessive shifting of the gears and noise in shifting, heavyness of the clutch, slip and noise in driving, and "R" and "D" in the case of an automatic transmission. The position of the gears, the shift state during driving, the slip and the noise during the driving are inputted.

In the case of the muffler, the main and auxiliary mufflers are worn out, damaged, exhaust manifolds and catalytic converters worn out, damaged, and the like. In the built-in state of the vehicle, odor occurrence and cleanliness are detected. In addition, the crack state of the glass is inspected for each portion of the glass, such as windshield glass, rear window glass, and quarter glass.

In the above-described process, the vehicle seller can evaluate the amount of the vehicle to be sold on the network, and input the desired price for sale with reference to the evaluation amount. do. In the selling vehicle information input field 45, a name, contact information, and a desired selling price of the seller wants to be input. Information about the used vehicle for sale 45 is not duplicated with information used in the vehicle evaluation amount calculation 43. You don't have to.

The purchaser wishing to purchase a used vehicle contrary to this, clicks the purchase button 42 and inputs the purchase vehicle information (48). As described above, when the input of the selling vehicle information and the input of the purchasing vehicle information is made, a plurality of buyers and buyers having similar conditions such as region, vehicle name, and price are calculated.

In order to download the searched information as described above, a fee must be paid. Such a payment process will be described with reference to FIG. 8.

As shown in the drawing, it is first checked whether to pay for the costs incurred by the user (50). The user who refuses the payment returns to the first step, and the user who wishes to pay the payment selects the payment means 51. The payment means 51 may pay by credit card 53, bank transfer 55, cyber money 57, etc., and check payment at the final step (59). Here, the payment means 51 may utilize the payment means of the member information previously stored in the member information database D1. In addition, the data generated in the payment process is updated and registered in the payment database connected to the external financial institution.

After the payment process 50, the information of the transaction party found in the process is downloaded (60). In addition, it is possible to download (71) sales information with various data such as tax procedures, vehicle registration procedures, ownership transfer notices, and insurance relations required when buying and selling a vehicle. In addition, the vehicle can be requested for a direct vehicle evaluation (80), in which the expert directly evaluates the condition of the vehicle by requesting an expert to determine whether the vehicle has a maintenance status or an accident power. ) However, the vehicle sales information 70 and the direct vehicle evaluation application 80 are not necessarily performed, and only necessary users can be selectively selected.

According to the configuration and method as described above of the present invention, the vehicle owner can directly calculate the evaluation amount of the used car by a standardized program for the price suitable for the state of the used car, Since it is possible to trade used cars directly, the logistics costs and margin costs by used car brokers are not added, which can give economic benefits to both the seller and the buyer of the used car.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

Claims (20)

In the price evaluation and trading system of a used car comprising a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites, The center site, A member management unit for updating and registering member authentication information and member registration information of a user connected from the member site; Vehicle price section for updating and storing the data of the used car price list displayed separately by vehicle name, year, and status; A vehicle evaluation unit for storing a vehicle price calculation means for calculating a vehicle price based on data of each item of a used vehicle inputted from the member site; And A system for evaluating and selling used cars using a network, comprising a vehicle sales information section in which data of administrative and procedural information necessary for used car sales are stored and updated. In the price evaluation and sale method of a used car comprising a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites, A member authentication step of determining whether the user who accesses the center site is authenticated; A used car price information table guiding step of displaying market prices, which are formed in real time by vehicle name, year, and vehicle state, and are displayed in real time; A used vehicle evaluation step of calculating an evaluation amount of the used vehicle by inputting the used vehicle state of the seller according to the item order in which the seller accesses the center site sequentially; A vehicle input search step of searching for a used vehicle desired by the user; And Price evaluation and sale method of a used car using a network, characterized in that the user is made to download the information of the trading party meeting the desired conditions. 3. The method of claim 2, wherein the vehicle sales information down step of downloading administrative and procedural information necessary for vehicle sales is added. In the price evaluation method of a used car comprising a center site, a plurality of member sites, and a network connecting and connecting the center site and the plurality of member sites, A first step of inputting basic information of a vehicle to be sold by a user who accesses the center site; A second step of processing and outputting an evaluation amount at the center site according to the first step; A third step of inputting a confirmation item basically installed in the vehicle to be sold by the seller and an option condition; A fourth step of processing and outputting an evaluation amount at the center site according to the third step; A fifth step of inputting an exterior item of the vehicle to be sold by the seller; And And a sixth step in which the evaluation amount is processed and output at the center site according to the fifth step. [5] The method of claim 4, wherein the basic items input in the first step are a manufacturer, a vehicle name, a model name, a transmission type, a year, a month type, a color, and a mileage. The network according to claim 4 or 5, wherein in the second step, the price according to the manufacturer, vehicle name, model name, transmission type, and year type input in the first step is a market price that is formed in real time. Price evaluation method of used car using. The method according to claim 6, wherein in the second step, the price according to the lunar eclipse input in the first step is classified into January to February, March to October, and November to December, and calculated by adding or subtracting a predetermined amount. How to evaluate the price of used cars using the network. 7. The method of claim 6, wherein in the second step, the price according to the color input in the first step is calculated by reducing a certain amount in the case of a singular color rather than a color that is widely popular according to the vehicle name. How to evaluate the price of used cars. The method according to claim 6, wherein in the second step, the price according to the mileage input in the first step is calculated by the method set on the center site after calculating the difference of the month and month described in the registration certificate of the used vehicle from the current month. Price evaluation method of used cars using a network, characterized in that for calculating the. 5. The method of claim 4, wherein the confirmation item input in the third step is classified into a spare tire, a basic tool, an instruction manual, a car account book, and a vehicle inspection before and after a predetermined period. . The method of claim 4, wherein the optional condition input in the third step is a power handle, air conditioner, aluminum wheel, leather seat, manual and electric sunroof, single and dual air bags, side air bags, ABS ( anti-lock brake system (ECS), electronic control suspension system (ECS), compact disc player (CDP), traction control system (TCS), driver and passenger seats, rear seat seats, navigation systems, AV systems, sound insulation, roof carriers Price evaluation method of used cars using the network, characterized in that classified into. The method of claim 4, wherein the exterior items of the used vehicle input in the fifth step are classified into an exchanged part and a sheet metal / painting part. The front and rear bumpers, left and right front fenders, left and right quarter panels, left and right front doors, left and right rear doors, bonnets, trunks, roofs, left and right side step panels, front support panels, trunk panels, and right and left center doors. Price evaluation method of used cars using a network, characterized in that classified into panels, housing. According to claim 4 or 13, In the fifth step, the price calculation of the housing input in the fourth step is the front and rear bumper, left and right front fender, left and right quarter panel, left and right front door, left and right rear door, bonnet, trunk The prices of the roof, left and right side step panels, front support panels, trunk panels, left and right center door panels; The price calculation of the front support panel includes the prices of the front bumper, the left and right front fenders and the bonnet; The trunk panel includes a price of the rear bumper, left and right quarter panels and trunks; The left center door panel comprises a left front door, a left rear door and a left side step panel; And the right center door panel includes a right front door, a right rear door, and a right side step panel to calculate a price by a method set on the center site. The network of claim 12, wherein the sheet / painting part is classified into front and rear bumpers, left and right front fenders, left and right quarter panels, left and right front doors, left and right rear doors, bonnets, trunks, loops, and left and right side step panels. How to evaluate the price of used cars. 16. The method of claim 15, further comprising the presence or absence of gloss in the sheet metal / part to be painted. 16. The network according to claim 4 or 15, wherein in the fifth step, the price for the sheet metal / part to be input in the fourth step is calculated by a method set on the center site. How to evaluate the price of used cars. The price of the used car using the network according to claim 4, further comprising a seventh step, which is a product value evaluation step of evaluating a specific part of the vehicle to be sold by a specialist who is an assessment evaluator of the used car after the sixth step. Assessment Methods. 19. The method of claim 18, wherein the input at the seventh step includes an engine, a manual and automatic transmission, a muffler, a battery, a built-in state of the vehicle, a crack state of the entire glass, an operation and a crack state of the headlight and the tail light, an outside mirror How to evaluate the price of used cars using the network, characterized in that the input of the broken and operating state, the tire wear state, the noise state of the vehicle body. 20. The method of claim 19, wherein the matters input in the seventh step are assessed by the assessor using a network.