I loved getting my math degree. Almost every professor provided us with copies of the book. One went so far as to hand out flash drives with the pdfs on them on day 1. For the few classes I did buy books for, I went online and found the international edition, which was generally around 30 bucks instead of 300.

Fuck text book publishers and fuck school bookstores.

One of my professors had a textbook that was shockingly out of date for the subject. Like we're talking using scientific data from 1995 at the latest, and I took this class 2 years ago. He sent a bunch of emails to the textbook author and eventually he came out with a "Fourth Edition" in response that changed NOTHING. The book was exactly the same except for a different cover. It was so bad that in the syllabus our professor warned us not to buy the fourth edition for the hefty $70 upcharge because it's the same thing as the third edition.