In an image processing system, a charging process for an executed print process is executed using one of a first charging method and a second charging method. Especially, when executing a print process of an image including a plurality of pages, it is determined before the start of the print process of the image including the plurality of pages on the basis of balance information managed in advance whether execution of the print process of the image including the plurality of pages is possible. When the first charging method is selected, execution of the print process is controlled on the basis of the result of determination. When the second charging method is selected, the print process is executed without determination.