Abstract: An apparatus is disclosed for supporting acceptance of an order of a custom product. The apparatus is connected to a user terminal in a company through an Intranet and includes a price estimation unit, a price matching unit, a storage unit and a WWW server. The apparatus first provides, to a user having a user registration, a menu of functions which can be utilized based on a division of the user in response to an access from the user terminal. When the WWW server receives a price estimation request for a custom product including product specifications and negotiation information from the user terminal, the price estimation unit calculates an estimated price. When the price matching unit receives a price matching request from the price estimation unit, it transmits an e-mail to the terminal of a person who perform the price matching to urge the person to issue an answer to the price matching. Necessary data including specification matching of the past are registered in the storage unit.