In the present invention, a customer operates a customer-use terminal device 1 so that image information stored in a data career brought by the customer is read out by a media drive 2 or a scanner 4, and then a clerk receives payment for the service by the customer. Subsequently, in the customer-use terminal device 1, a CD-R drive 3 carries out the storing of digital image data corresponding to the image information which has been read, only when the completion of the payment id confirmed. With this arrangement, it is possible to provide an image data storing service system which enables to save labor of clerks, reduce the required introduction cost, and ascertain the collection of the payment.