Don't settle for the prices your university or college is asking for text books. I recently purchased $600 worth of text books from my school only to be surprised at the end of the semester they wouldn't buy some of them back. I ended up with $95 after all was said and done.
This semester I have spent only $125.00 by renting my text books from Chegg.com. This includes the cost of return shipping. Just make sure you order the correct version of the text book you need.