That’s an excellent question! It’s definitely a good way to leverage existing networks on-campus, strengthen the OER production movement at one’s institution, and possibly even lower the costs for printing OERs. I know that @dave.dillon explored the potential of printing his Blueprint of Success open textbook with his college’s bookstore/printing service. I’m tagging him here, in case he can tell you more about the experience/process!
I also think this would be a great one to ask at our upcoming Office Hours session on print and OER, in case any of our guests or attendees on the call have experience working with their on-campus print services that they can share. Details about the session are here, in case you are interested: Office Hours: More than a Button: Getting Open Textbooks into Print (27 June 2019, 2pm EST/ 6pm UTC).