Having gone through undergrad and law school I can relate to both the high cost of books and remember certain books that were never opened. Costing sometimes $100 for a single student, savings really add up when your talking about classes of 30, 50 or 100's of students.

I would have used this service if it was reliable, but if I ever had a bad experience - book was needed- I might not return.

One thought, next to the amazon hard back offer a digital version for various platforms (kindle, apple, android, ect...)