KR20020062457A - Method and system for providing a double chance when purchasing an objects - Google Patents

Abstract

PURPOSE: A system and a method for the double lucky purchase of a product are provided to promote a client to purchase the other product by returning the saving cost, such as the distribution margin and logistics costs, to the client through the on-line electronic commerce. CONSTITUTION: The client accesses a product purchase server by using the Internet through a PC, PDA(Personal Digital Assistant), or Internet mobile phone(S10). The client searches and purchases the desired product through a product DB of the server(S20). When the client applies for the purchase and completes the payment, the product purchase server offers the chance of the double lucky purchase to the client(S30). The product purchase server performs to draw lots(S40). If the client wins a prize in the double lucky purchase, the product purchase server offers the other product to the client in free(S50). Otherwise, the product purchase server offers the cyber money to the client(S60). The client can save up the cyber money to an electronic purse or purchase the product by using the cyber money(S70).

Description

METHOD AND SYSTEM FOR PROVIDING A DOUBLE CHANCE WHEN PURCHASING AN OBJECTS}

The present invention relates to a method and system for purchasing lucky goods using wired and wireless Internet.

At present, in order to obtain a product, a direct product purchase method is widely used in stores such as department stores, stores, and discount stores. In such a real transaction, various modified sales methods, such as a pyramid sales method or a multi-level sales method, are used. Alternatively, a product may be introduced using a broadcasting medium such as a TV, the buyer selects the introduced product, and a purchase order is sent to the buyer, the buyer selects the product, and then orders Purchasing using the telesales method is currently active.

FIG. 5A is a diagram illustrating a distribution flow of goods in a conventional offline commerce, and FIG. 5B is a diagram illustrating a distribution flow of goods in an online commerce.

First, the distribution flow of the conventional goods shown in Figure 5 (a) is produced by the producer 200, the product delivered to the wholesaler 210 at a price including the product cost + logistics cost + margin, wholesaler 210 again delivers to retailer 220 at a price that includes logistics cost plus margin at wholesale price, which retailer then sells to consumer 10 at a price that includes the retailer's margin. Some commodities include distribution margins and logistics costs through more complex distribution steps, which can lead to higher margins than commodity prices. In general, in the case of Internet bookstores, discounts of 20% to 30% of book prices are estimated to indicate that the distribution margin and logistics cost of off-line products account for 30-40% of products. Of course, depending on the product, there may be a higher ratio of distribution margin.

In addition, with the spread of the Internet, an online transaction, that is, an e-commerce method, which is completely different from the existing offline, has emerged and widely spread. In this online e-commerce scheme, as shown in FIG. 5 (b), the client 10 purchases a product by accessing a commodity server 100 such as a shopping mall through a computer terminal, a personal digital assistant (PDA), or a mobile phone. Apply and pay for the purchase of the goods. In this case, when the goods are ordered by a certain contract between the producer 200 and the goods server 100, the goods are delivered directly to the client 10, or the goods are delivered to the goods server 100, and the goods server 100 is provided. ) Will ship it to the client who ordered it. In such e-commerce, the distribution process is reduced, so the distribution margin is reduced. Therefore, shopping malls or online bookstores are sold at a discounted cost, so as to benefit consumers.

On the other hand, as shown in Figs. 6 (a) to 6 (c), a new product purchase method using the Internet, such as a joint purchase method, an auction method, a reverse auction method, etc., is widely used in electronic commerce such as a shopping mall.

6 (a) to 6 (c) are explanatory diagrams schematically showing various product purchasing methods in the online commerce shown in FIG. 5 (b).

First, as shown in FIG. 6 (a), the joint purchase method is a new purchase method through the Internet, and presents an Internet portal operator, specifications of a jointly purchaseable product, or a price at the time of joint purchase on the Internet. For example, if 10 people co-purchase a commodity A, the commodity price is 155,000 won. If 30 people co-purchase, the commodity price is 150,000 won. If 50 people co-purchase, the commodity price is 145,000 won. As more co-buyers, such as won, the price goes down.

Using such a joint purchase method, there is an advantage that consumers can buy the goods needed at a lower price for the same product.

Hereinafter, the auction and the reverse auction method using the Internet will be briefly described with reference to FIGS. 6B and 6C.

In the auction method using the Internet as shown in FIG. 6 (b), a plurality of clients who want to participate in the auction by presenting auction items (B products) on their homepages at an Internet portal company and setting a predetermined period of time are determined by their bidders. Is presented to the client who bid the highest price, and the successful bidder pays the price of the B product so that the B product is delivered to the successful client.

On the contrary, the reverse auction method as shown in FIG. 6 (c) is the opposite of the auction described above. The seller is a reverse auction method using the Internet as a purchase method that can meet the conditions, such as the price of the goods presented by the buyer is disclosed in US Patent No. 5,897,620 and the like.

The above-described online purchase method, joint purchase method, and internet reverse auction method are advantageous to buyers (consumers) because they can purchase goods at a low price, but in terms of producers (manufacturers), they sacrifice the margin of producers' production of goods. Must sell the product. In addition, if the competition intensifies, sales may fall short of the production cost of the product. In this case, the more the product is sold, the less the deficit may occur.

In addition, the existing off-line distribution industry is suffering from the collapse of the industrial structure itself due to the development of online purchasing. For example, with the development of online bookstores, online bookstores are sold at discounted distribution margins, so that publishers and the like do not supply books to online bookstores in consideration of equity with existing bookstores. In other words, the reality is that online commerce and existing offline commerce collide sharply and collide to protect their business areas. On the other hand, in terms of producers, despite the merits of logistics costs, distribution margins, and manpower, online transactions have a high proportion of offline transactions. Thus, in a short time, it can be seen that switching all the commerce from offline to online can drive the serious situation of having to give up production itself.

On the other hand, in a real transaction, if a large number of lotteries exist, the lottery issuer or agency issues a lottery ticket, sells the lottery ticket to an unspecified number of clients, and after a certain period has elapsed, the lottery time arrives. To draw, select a winner and pay the prize. The lottery issuer or agency returns the proceeds, excluding the lottery winnings and all expenses, and these proceeds are used for a separate purpose.

Such lottery tickets are selected and announced at a certain time regardless of the amount of lottery sales, and the winning client pays the winnings when the winning client confirms the fact and requests the payment of the winnings. These lottery tickets are difficult for the average client to know how much they profit, despite the enormous profits, and where they are used, and the odds of winning the lottery are hundreds of thousands or even millions. And through these lotteries, there are also disadvantages that encourage meandering feelings.

In view of the above-described problems, an object of the present invention is a double luck purchase method for returning to a consumer (client), rather than selling the product at a discounted cost such as distribution margin, logistics cost, etc. in online e-commerce. And to provide a system.

Another object of the present invention is to produce a product on the producer side without sacrificing a margin, such as product discount, so that the client can purchase the other savings, such as distribution margin generated in the distribution process through the double luck purchase method and system. The present invention aims to provide a method and a system for double luck purchasing of goods that can induce consumption promotion, prevent conflicts in offline and online commerce, and establish a distribution order.

Another object of the present invention is that when the client purchases a product, if the winning probability provided is won in a double lucky purchase lottery with a high probability of winning about 1/2 to 1/10, the same prize is received or purchased. It is to provide a method and system for purchasing a double good luck of a product that can be lucky enough to purchase another product within the same price as the product price, or to receive cash for a certain percentage of the purchased product price.

Another object of the present invention is that when a client purchases a product, even if the winning probability provided is not won in a double lucky purchase lottery with a high probability of winning 1/2 to 1/10, it is about 10% of the purchased product price. It is to provide a method and system for purchasing a double luck of a product that can be returned to the cyber money (bonus points) corresponding to a certain ratio of.

1 (a) is a diagram showing a schematic system configuration for realizing a double luck purchase method of goods according to the present invention,

2 (a) to 2 (f) are diagrams sequentially showing an exemplary screen displayed to a client in a double luck purchasing system of goods;

3 is a flowchart illustrating a specific process of a method of purchasing double luck of a product according to the present invention;

4 is a flowchart showing a modification of the luck purchasing method of the product shown in FIG. 2;

5 (a) is a view showing a distribution flow of goods in the conventional offline commerce by way of example, Figure 5 (b) is a view showing an example of the distribution flow of goods in the online commerce,

6 (a) to 6 (c) are explanatory diagrams schematically showing various product purchase methods in the online commerce shown in FIG. 5 (b).

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

10: client 100: server

110, 120, 130: Database 200: Producers

210: Wholesaler 220: Retailer

Double luck purchasing system of goods according to an embodiment of the present invention,

And a plurality of clients who want to purchase a product, and a product purchase server that displays and provides a double lucky purchase probability of the product together with information about the product.

When the client accesses the product purchase server and purchases any product, the client provides a double lucky purchase lottery opportunity, and when the client wins the lottery, one more corresponding product is provided.

Double luck purchasing system of goods according to another embodiment of the present invention,

Multiple clients wishing to purchase a product, and

And a product purchase server which provides the client with information about the product and displays a double lucky purchase probability of the product.

When the client connects to the product purchase server and purchases any product, the client provides a double lucky purchase lottery opportunity, and when the lottery wins, one more product or a cyber money of the same price is provided. The cyber money may be used to purchase other products or to be provided at a predetermined rate in cash.

Preferably, in the double luck purchasing system of the merchandise of the present invention, the lottery method comprises a method of presenting the number of cards corresponding to the winning probability, selecting one of the cards, a game method, or a quiz method. do.

Preferably, in the double luck purchasing system of the product of the present invention, the client who does not win the lottery is provided with a predetermined percentage of the product price by cyber money.

Preferably, in the double luck purchasing system of the product of the present invention, the probability of winning the double luck purchase lottery provided upon purchase of the product is calculated based on a distribution margin of the product.

According to another embodiment of the present invention, a double luck purchase method of goods,

The client connecting to the product purchase server,

Purchasing, by the client, a product provided by the product purchase server;

Immediately after completing the purchase of the product, providing a double lucky purchase lottery opportunity,

Checking the result by drawing according to a predetermined drawing method provided by the product purchasing server;

When winning the lottery, providing the client with one more prize, and

In the case of not winning the lottery, it characterized in that it comprises the step of providing the client with the cyber money corresponding to a predetermined percentage of the purchase price of the product.

Preferably, in the double lucky purchase method of the product of the present invention, in the case of winning the double lucky purchase lottery, the step of providing one more corresponding product to the client provides another cyber money corresponding to the price of the purchased product. It can be replaced by the step of selecting any one of the case to buy or to return to a certain percentage of cash of the commodity price.

Preferably, the double luck purchase method of the product of the present invention, after purchasing the product, according to the payment method of the double luck purchase lottery provided, the unique luck number is given at the time of purchase of the product, and after the payment is completed, the unique By entering a lucky number, you can also run a double lucky draw.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3.

1 is a diagram illustrating a schematic system configuration for realizing a good luck purchasing method of a product according to the present invention.

In Fig. 1, reference numeral 10 denotes a user who uses a mobile telephone, a personal digital assistant (PDA), or a personal computer terminal capable of internet as a client. Also, reference numeral 100 is a server capable of realizing a method of purchasing a product using the wired or wireless Internet according to the present invention. Here, the server 100 includes a database 110 that stores price and specifications of a product, a database 120 that stores member information, and a database 130 that stores winning odds and lottery data when purchasing a good luck product. It includes a number of databases.

Hereinafter, with reference to FIGS. 1 and 2 (a) to 2 (f) will be described in detail with respect to the method and system for purchasing double luck of the goods according to the present invention.

As shown in Fig. 1 and Fig. 2 (a), the method and system for purchasing the double luck of the product is to store the refrigerator of the company A among the goods displayed on the screen of the computer terminal by the client 10 connected to the goods server 100 000 I want to buy for 10,000 won.

Various products are displayed on the screen provided by the product server 100. Various products are displayed as product name, double luck purchasing probability, for example, 1/2 to 1/10 depending on the product as shown in Fig. 2 (a). By clicking on the client 10, as shown in Fig. 2 (b), the price of the selected product, the details, the probability of purchasing double luck, and the rate of providing bonus points of the non-winning product price are displayed.

Here, the double lucky purchase probability is a purchase method in which a prize is drawn by a lottery method to receive another item of the same price, purchase another product of the same price of the product price, or receive a certain amount of cash back of the product price. This ratio is determined in consideration of the margin of the product and the percentage of bonus points provided to the non-winners described later, and even if the prize is not won in the double lucky draw, the cyber money at a predetermined ratio of the product price ( Bonus points, which allow you to purchase other products.

For example, a XX product with a market price of 1 million won, a margin of 35%, and a 30% discount factor, will be allocated 20% of the margin to the chance of double luck, and the percentage of bonus points. Allocate 10%

In this case, the probability of purchasing double good luck is 1/5, where 5 people have purchased XX items, and 1 of 5 people will receive one more XX product or can buy another product of the same price (or bonus points). ), You can buy another product, or in another way, you can get back a certain amount of cash, excluding the margin of the product. In this case, about 70-75 million won can be returned in cash.

In addition, four non-winning clients will receive cyber money (or bonus points) equivalent to approximately 12.5% of the prize price. This cyber money can be immediately used for purchasing other goods or, if a member of the product server 100 is registered as a member, is stored in the provided electronic wallet. The accumulated cyber money can be used for future product purchases.

In FIG. 2 (c), when the client 10 applies for a purchase in FIG. 2 (b), a payment method is selected, and when the payment is completed, a double lucky purchase lottery opportunity is given.

In FIG. 2 (d), the client 10 executes a double lucky purchase lottery in accordance with a predetermined lottery method provided by the commodity server 100. In this example, the back side of six cards is displayed, and the client 10 selects any one of these six cards, and all the cards are turned upside down, whereby the winning confirmation is possible. In FIG. 2 (d), 6 cards are presented as a drawing method, but 2 to 6 cards may be presented depending on a winning probability. On the other hand, here, although the card system is shown as a double lucky purchase lottery system, it should be appreciated that it is not limited thereto. Other methods of drawing may include all kinds of games, quizzes, and the like.

In the case of winning a double luck purchase lottery in FIG. 2 (d), the process proceeds to FIG. 2 (e), and in the case of not winning, the process proceeds to FIG. 2 (f).

FIG. 2 (e) is a view showing a display screen when the winning of the double lucky purchase lottery, and the client 10 may purchase one more identical item by winning the double lucky purchase lottery. However, buying one more identical book, such as a book, is meaningless, and you can buy another book of the same price instead, and if you don't want to buy a book right now, you'll get a lucky amount of cyber money (bonus points). You can, of course, be stored in the electronic wallet provided at the time of membership registration, and use the accumulated credit at the next shopping time. In addition, it is also possible to transfer a client's account in cash according to the regulations. Here, in order to receive a cash account transfer, the distribution margin and the necessary expenses may be limited depending on the product or the distribution margin rate of the product.

In Figure 2 (d), even if not win a double lucky lottery, the client 10 has a certain percentage of the price of the product is stored in the electronic wallet provided when registering as a cyber money, if a certain amount is accumulated, this cyber You can also use your money to shop.

In FIG. 2 (c), in some payment methods such as credit card payment, if a payment is possible immediately, a double lucky purchase opportunity is given immediately, and an account transfer through a bank account or the like is made later in time. In this case, by assigning a unique lucky number or the like, it is possible to draw a double lucky purchase lottery by connecting to the merchandise server 200 at an appropriate time and entering the unique lucky number after payment is completed.

Hereinafter, a detailed process of the double luck purchasing method of the product according to the present invention will be described in detail with reference to the flowcharts of FIGS. 3 and 4.

FIG. 3 is a flowchart showing a specific process for the double luck purchasing method of the product according to the present invention, and FIG. 4 is a flowchart showing a modification of the double luck purchasing method of the product shown in FIG.

In Fig. 3, the client 10 connects to the product server 100 of the method and system for double luck purchase of goods according to the present invention through a personal computer terminal, a personal digital assistant (PDA) or a wireless internet enabled mobile phone ( Step S10). In step S10, the product server 100 includes a member information database 120 and the like, and when registering as a new member, an electronic wallet (not shown) that can store cyber money (or bonus points) to provide. Since the membership registration process and the login process are well known, detailed descriptions are omitted here.

In step S20, the client 10 searches the product database 110 of the server 100, searches for the product that the client 10 wants to purchase, and purchases the product (FIGS. 2A to 2 (FIG. 2A). c)].

In step S30, when the client 10 selects a product and makes a purchase request, and the payment of the product price is completed, a double lucky purchase lottery opportunity according to the present invention is immediately provided (see Fig. 2 (d)). Here, as described above, step S30 may be separately performed according to the payment method.

In step S40, a prize is drawn according to the method presented by the product server 100. As shown in Fig. 2 (d), when one of the six cards is selected and the winning confirmation button is clicked, all the cards are turned over, and the winning result can be immediately confirmed. If the winner of the double lucky purchase lottery, one more item is provided (step S40). The client 10 who does not win the double lucky purchase lottery is provided with cyber money corresponding to a predetermined percentage of the product price (step S60). The cyber money may be stored in the electronic wallet provided from the product server 100 at the time of membership registration, or the product may be purchased using the cyber money (step S70).

Hereinafter, with reference to Figure 4 will be described in detail a modification of the double luck purchasing method of goods according to the present invention.

In FIG. 4, the client 10 accesses the product server 100 at step S 110, purchasing the product at step S120, and providing a double lucky purchase lottery opportunity at step S 130. Confirming step (S 140) is the same as described in FIG. If the client 10 who has purchased the product wins the double luck purchase lottery, the client 10 requests the provision of the same product in step S150 when the client 10 needs the same product, and the same product is unnecessary. In this case, another product corresponding to the product price may be purchased (step S160). In addition, if the client 10 wants to receive the cash back in step S170, cash of the amount according to the regulations may be returned to the cash through an account transfer (step S180).

In step S150, the cyber money corresponding to a predetermined percentage of the product price is provided to the client 10 who does not win the double lucky purchase lottery (step S200). The client 10 who has been provided with the cyber money at a predetermined percentage of the product price may purchase another product using the cyber money (step S210), or otherwise, may accumulate it in an electronic wallet (not shown) provided at the time of membership registration. (Step S220).

According to the embodiments of the present invention, in the e-commerce, the product is not discounted and sold by the reduced cost such as distribution margin, logistics cost, etc., but is returned to the consumer (client). Produce products without sacrificing margins, and through the client's double luck purchasing method and system, the client can promote the consumption by saving other distribution margins such as distribution margins that occur in the distribution process, while promoting offline and online. The effect of preventing a collision in commerce and establishing a distribution order can be obtained.

In addition, according to an embodiment of the present invention, when a client purchases a product, if the winning probability provided is won in a double lucky purchase lottery with a high probability of winning about 1/2 to 1/10, the user receives one more same prize or You can either buy another product within the same price limit as the price of the purchased item, or you can be lucky to get back a certain percentage of the price of the purchased item, even if you do not win the double lucky purchase draw Cyber money (bonus points) corresponding to a certain percentage of the price of a product can be returned, resulting in a significantly higher customer incentive effect.

In addition, according to an embodiment of the present invention, by returning the distribution margin of the product back to the client, so that it is possible to purchase another product, it is possible to obtain an effect that can promote the consumption by that much.

The above embodiments are presented by way of example in order to facilitate understanding of the present invention. However, this invention is limited to the above embodiment and is not interpreted. It is understood that various improvements and modifications made in accordance with the spirit of the present invention also fall within the technical scope of the present invention.

Claims (17)

In the double good luck purchasing system of goods, Multiple clients wishing to purchase a product, and And a product purchase server which provides the client with information about the product and displays a double lucky purchase probability of the product. When the client connects to the product purchase server and purchases any product, a double luck purchase lottery opportunity is provided, and when the lottery is won, a double luck purchase system of the product is provided. . In the double good luck purchasing system of goods, Multiple clients wishing to purchase a product, and And a product purchase server which provides the client with information about the product and displays a double lucky purchase probability of the product. When the client connects to the product purchase server and purchases any product, the client provides a double lucky purchase lottery opportunity, and when the lottery wins, one more product or a cyber money of the same price is provided. A double lucky purchase system for a product, wherein the cyber money is used to purchase another product or to provide a predetermined ratio of cash. The system of claim 1 or 2, wherein the lottery method comprises selecting a number of cards corresponding to a winning probability and selecting one of the cards. The system of claim 1 or 2, wherein the lottery system is a game system. The system of claim 1 or 2, wherein the lottery system is a quiz system. The system of claim 1 or 2, wherein a predetermined percentage of a product price is provided to the client who does not win the lottery by cyber money. 3. The system of claim 1 or 2, wherein the probability of winning a double lucky purchase lottery provided upon purchase of the product is calculated based on a distribution margin of the product. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; Immediately after completing the purchase of the product, providing a double lucky purchase lottery opportunity, Checking the result by drawing according to a predetermined drawing method provided by the product purchasing server; In case of winning the lottery, providing the client with one more prize, In the case of not winning the lottery, providing the client with cyber money corresponding to a predetermined percentage of the purchase price Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; Immediately after completing the purchase of the product, providing a double lucky purchase lottery opportunity, Checking the result by drawing according to a predetermined drawing method provided by the product purchasing server; In case of winning the lottery, providing cyber money corresponding to the price of the purchased product to purchase another product, If not winning the lottery, providing the client with the cyber money corresponding to a predetermined percentage of the purchase price of the purchased product, Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; Immediately after completing the purchase of the product, providing a double lucky purchase lottery opportunity, Checking the result by drawing according to a predetermined drawing method provided by the product purchasing server; Selecting one of the cases of returning to the cash at a predetermined rate of the commodity price when the prize is won in the lottery, If not winning the lottery, providing the client with the cyber money corresponding to a predetermined percentage of the purchase price of the purchased product, Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, The client searching for a product provided by the product purchase server, applying for a purchase, and paying for the product and completing the purchase; After purchasing the goods, providing a double lucky purchase lottery opportunity, Checking the result by drawing according to a predetermined drawing method provided by the product purchasing server; In the case of winning the lottery, when the client receives one more purchase product, when the cyber money corresponding to the price of the purchased product is purchased to purchase another product, or when the money is returned to a certain percentage of the product price Selecting any one case, The product purchasing server providing one more product, providing cyber money, or paying a certain amount of cash according to the client's selection; In the case of not winning the lottery, providing the client with cyber money corresponding to a predetermined percentage of the purchase price Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; After the product purchase is completed, providing a lucky number or the like by providing the lucky number to the client who purchased the product, and providing a double lucky purchase lottery opportunity; Inputting the lucky number according to a predetermined lottery method provided by the product purchasing server, and checking the result; In case of winning the lottery, providing the client with one more prize, In the case of not winning the lottery, providing the client with cyber money corresponding to a predetermined percentage of the purchase price Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; After the product purchase is completed, providing a lucky number or the like by providing the lucky number to the client who purchased the product, and providing a double lucky purchase lottery opportunity; Inputting the lucky number according to a predetermined lottery method provided by the product purchasing server, and checking the result; In case of winning the lottery, providing cyber money corresponding to the price of the purchased product to purchase another product, If not winning the lottery, providing the client with the cyber money corresponding to a predetermined percentage of the purchase price of the purchased product, Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, Purchasing, by the client, a product provided by the product purchase server; After the product purchase is completed, providing a lucky number or the like by providing the lucky number to the client who purchased the product, and providing a double lucky purchase lottery opportunity; Inputting the lucky number according to a predetermined lottery method provided by the product purchasing server, and checking the result; Selecting one of the cases of returning to the cash at a predetermined rate of the commodity price when the prize is won in the lottery, If not winning the lottery, providing the client with the cyber money corresponding to a predetermined percentage of the purchase price of the purchased product, Double luck purchase method of goods, characterized in that it comprises a. In the double luck purchase method of the product, The client connecting to the product purchase server, The client searching for a product provided by the product purchase server and making a purchase; After the product purchase is completed, providing a lucky number or the like by providing the lucky number to the client who purchased the product, and providing a double lucky purchase lottery opportunity; Inputting the lucky number according to a predetermined lottery method provided by the product purchasing server, and checking the result; In the case of winning the lottery, when the client receives one more purchase product, when the cyber money corresponding to the price of the purchased product is purchased to purchase another product, or when the money is returned to a certain percentage of the product price Selecting any one case, The product purchasing server providing one more product, providing cyber money, or paying a certain amount of cash according to the client's selection; In the case of not winning the lottery, providing the client with cyber money corresponding to a predetermined percentage of the purchase price Double luck purchase method of goods, characterized in that it comprises a. The method according to any one of claims 8 to 15, characterized in that the lottery system consists of presenting the number of cards corresponding to the winning probability and selecting any one of the cards. . 16. The method of claim 8, wherein the lottery system is a game system.