Print order systems

Hey colorprinters, would like some advise for a free open source print order system, to be used by a small printshop in the Netherlands (where iDeal is mostly used). The system needs to be account based (user registration), where user can log in and send a batch of document files (with selection: page range, single sided/double sided, full color/black-white, papertype etc.). Would be cool if users can also pay via the system, that an admin can start print batch, and that the user get a notification if the job(s) are completed.

I have a Xerox C60 production printer, and WorkCentre 7545. On the C60 their is a option called PrintMe, didn't test that out, but I heard it was to simple. Not sure if that fit my needs.

Please let me know what your experiences are with print order systems.