in roughly half of my classes; my professors were the authors of the of the books that they were selling so they made photocopies of them to distribute to the student for free.

it was one of two benefits to attending the largest university in the country (at the time).

For my classes, anything that was graded was not done from the textbook it was either online questions or from a worksheet. Any work given from the textbook was just for our practice and not graded. They'd usually just call out sections of questions based on that day's lesson.

I walked my students through where to find the pdf of the text book in the first class after we covered the syllabus.