| 摘要 |
PURPOSE: A reverse auction method is provided to realize a purchase to the same least cost about a plurality of buyers. CONSTITUTION: Each buyer inputs purchase application information(S101). A reverse auction server provides present purchase application conditions to a seller or the buyer(S102). The seller inputs bid information(S103). The reverse auction server provides a bid result(S104). The reserve auction server determines all buyers who support a maximum purchase price over selling price as a purchase-determined buyer. The reverse auction server eliminates all buyers who supported with a maximum purchase price less than a contract price(S105). |
