Charging system, charging method, and data-recording medium on which a charging control program is recorded

The system has a calculating device for computing the fee generated by communication in a network system, and a charging processor that performs processing for charging the seller of the calculated fee. The network system includes a terminal apparatus that performs communication via a communication apparatus, and a seller's apparatus belonging to the seller that has sold the terminal apparatus. Independent claims are also included for the following: (a) Communication apparatus; (b) Terminal apparatus; (c) Seller's apparatus; (d) Charging method; (e) Charging control data signal; and (f) Data recording medium storing the program of the charging method. There is provided a charging system or the like which makes it possible to reduce financial and procedural burden on a purchaser of a terminal apparatus and to also reduce procedural burden on a communication carrier. A network system N is that a communication apparatus C owned by the communication carrier, an attached terminal T of a communication type car-navigation apparatus, and a processing apparatus H owned by a seller of the communication type car-navigation apparatus are connected via a wired or wireless line L. In the network system N, a fee calculation server in the communication apparatus C calculates a fee generated by the attached terminal T performing communication via the communication apparatus C. And a charging server in the communication apparatus C performs processing for charging the calculated fee to thereby charge the seller the fee.