PURPOSE: A market revitalization method by promoting price competition in an open market is provided to satisfy additional discount need of customers about large amount purchases by offering direct economical profits to the customers.;CONSTITUTION: A seller inputs a product priority price discount rate to a broker template(S1). An open market shopping mall provides product sale information of a product to a customer(S2). The customer selects the product from many sellers(S3). The customer changes the selection priority of the product(S4). The customer selects the product according to the product order of the biggest price sale amount(S5). A broker pays a product price to each seller(S7).;COPYRIGHT KIPO 2010
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