[Problem] when a user requests a quotation for only real, real estate matching the predetermined commodity or service is provided in the estimation. [Solution] the estimation system for presenting, to a user terminal 2, the terminal 3 will, via the communication network NW is enabled, real estate information storing part storing information having 1A. 2 From the user terminal, a predetermined real estates, purchasing a predetermined commodity or service receives a request to estimate the cost, the processing part 11, real estate information storage part 1A references, extracts a specific real estate information, a predetermined commodity or service provider of the trader terminal 3 to, and real estate information, the purchase of goods or services to estimate the cost of transmitting the request. From the dealer terminal 3, the purchase of goods or services to estimate the cost information is received, the user terminal 2 to, estimate information is transmitted. Figure 1 [drawing]