Abstract: A pay-for-use office machine, such as a digital copier, monitors and logs chargeable machine activities on a dynamically changeable session basis and generates a session activity report based on the logged activities during the session. The report enables capture of revenue value from an office machine by a pay-for-use service provider by summarizing activities so that costs associated with the activities can be assessed to the customer at a point-of-sale (POS) terminal. The report may be generated in hardcopy form by the office machine or may be transferred to the POS terminal electronically. The session activity report may include variable costing information for each chargeable activity.