| 摘要 |
PURPOSE: A reverse auction method for offering a purchasing opportunity to a plurality of buyers at low cost is provided to sell the bulk amount of materials to the seller by the type of quick sale at small profit. CONSTITUTION: It is offered to a seller to which a purchase support present condition is connected(S102). The bidding information including the sale desired price is stored in the auction server(S103). The seller determines a successful bidder. The sale desired price determines the selling price. The purchase support quantity of all purchase corresponding to the contract price is fixed to the successful auction(S104). |
