Buying/selling support system and storage medium on which buying/settling support program is recorded

摘要

A buying/selling support system comprising a seller terminal (1) for sending identification information on an oil or cement seller and sale information, a buyer terminal (2) for sending identification information on an oil or cement buyer and purchase information, a buying/selling support/management server (4) for presenting the sale information and purchase information to the seller or the participants participating as buyers, accepting applications for purchase about the sale information or for sale about the purchase information for a given period, temporarily settling the deal under predetermined conditions, presenting the contents of the settlement to the participants, and judging that the deal is concluded on the basis of the fact that the contents of the temporary settlement are ascertained by the participants, a manager terminal (3) for ascertaining that the deal is concluded, and an open network (5) for allowing the terminals to intercommunicate the information.