To provide a merchandise selling system which enables an affiliator to determine a selling price and can perform a drop-shipping type affiliate system.

A supplier ID, an affiliator ID, a desired sales price, a sales advertisement margin and sales price data are stored in the system. When connected based on the supplier ID, the desired sales price and the sales advertisement margin can be input into a storage means. When connected based on the affiliator ID, the sales price data can be input and link banner data to a page for merchandise sales is created for each affiliator ID. When a consumer accesses the page for merchandise sales, the consumer specifies the affiliator with link banner data and displays the sales price on the page for merchandise sales based on the sales price data of the affiliator.