A book on-demand system having reading data for reading book contents and printing and bookbinding data for printing and bookbinding on the server thereof and also having a function to transmit the reading data to a reading device via a network at a user's request and also transmit the printing and bookbinding data to a printing and bookbinding device, wherein the server separately handles reading charge data concerning a reading charge applied to reading data transmission and printing and bookbinding charge data concerning a printing and bookbinding charge applied to printing and bookbinding processing.