The commodity selling intermediation apparatus includes a main control unit that causes a customer to input order information related to a plurality of commodities, compares totals of the prices of the plurality of ordered commodities in the shops with each other with reference to a shop commodity information database to show the customer the totals, causes the customer to select one of the shops as a selling agent, and places an order to the shop selected by the customer through a network on the basis of order contents of the commodities.