I had one professor who did this but spiralbound for our only course textbook but it was mostly just pulled from other sources and they only charged like $20 for it. It was great. Another one of my professors got in trouble with the on campus print shop because she was sending students there with her personal copy of the textbook to make photocopies of like 50 pages at a time lmao. One thing I appreciated about my school was that our professors seemed generally aware of crazy textbook prices and did what they could to help make it more manageable.