We don't ultimately expect we will go off contract. We expect to be successful in renegotiating our daily reimbursement rate.
We are required to give a four-month notice before we can go off contract.
I understand that books can be a real financial pinch for students, but buying a quality book, and spending a lot of time with it, is one of the best habits you can have in life. I still have a lot of my textbooks, especially from law school, and they are very valuable to me.
A lot of things in life are expensive, but books are a good thing to have. There is still no replacement for a good old-fashioned book when you are trying to learn.
In my case, if I didn't think a book was important to a student to navigate the course, I wouldn't require it. But since I did require a book, I made that book an integral part of the course.