PURPOSE: An electronic commerce method for reducing costs is provided to enable a user to search for the total cost of a product including selling price and shipping charges. CONSTITUTION: A receiver(132) receives a plurality of search words from a user terminal. An information extractor(134) extracts product information corresponding to a plurality of search words from a search target server. A cost calculator(136) produces the total cost including selling price and shipping charge. A transmitter(138) transmits the calculated result to the user terminal. A purchase processor(140) offers a goods purchase procedure based on the received calculated result.
