To provide completely new method and system in which a vendor offering the most inexpensive communication fee is selected and a network connection can be attained.

A user accesses a host terminal 2 managing communication access bidding from a user terminal 1 to set his/her desired communication fee, the host terminal transmits the user's desired communication fee set by the user terminal to a plurality of vendors to inquire whether a network connection service is available at the desired communication fee, and vendor terminals return responses as to whether or not to offer a service at the transmitted desired communication fee. After predetermined fixed time passes or when the host terminal obtains responses from all of the inquired vendors within fixed time, the host terminal notifies the user terminal of the responses from the vendors, the user makes a plurality of vendors compete with each other about a communication fee, and when an answer is obtained among the plurality of vendors, the user selects his/her favorite vendor to perform network connection or makes a plurality of vendors compete with each other at a cheaper communication fee.