Method for Directly Issuing and Using Discount Coupon by Product Buyer Himself/Herself

A method for directly issuing and using a discount coupon by a product buyer himself/herself with a discount coupon management server having a function that enables the product buyer to directly issue and use a discount coupon corresponding to a deposit made by a product seller who wants to sell a product, the method comprising:

• (a) accumulating, by the product seller, a predetermined deposit in the discount coupon management server with his/her terminal interworking with the discount coupon management server;
• and
• (b) accessing the discount coupon management server through the product buyer's terminal interworking with the discount coupon management server, issuing a discount coupon having a predetermined discount price for a product, which the product buyer wants to purchase, within an amount of the deposit, and storing the discount coupon in the discount coupon management server, by the product buyer himself/herself,
• wherein at least one predetermined discount coupon having the predetermined discount price is issued through the terminal of the product buyer within the amount of the deposit,
• when the predetermined discount coupon is used within a term of validity after being issued, the deposit is reduced in proportion to an issue price of the discount coupon,
• when the predetermined discount coupon is not used within the term of validity after being issued, the deposit is not reduced,
• when the product buyer does not use the discount coupon issued through his/her terminal within a predetermined time period, further issuance of the discount coupon is blocked for a predetermined time period,
• a predetermined amount of reserve, which is changed according to an issuance result and a usage result of the discount coupon of the product buyer, is accumulated in an account of the product buyer,
• the reserve accumulated in the account of the product buyer can be used at the time of purchasing a product from at least one online shopping mall interworking with the discount coupon management server,
• the discount coupon issued by the product buyer includes information of a product manager and information of the product buyer,
• the discount coupon issued by the product buyer and including the information of the product buyer can be transmitted to a portable terminal of a third person and transferred to the third person, and
• when the third person uses the discount coupon, such use is reflected on a purchase result of the product buyer.