Buying text books at full price is ridiculous! Why? Because they know you have to buy it - the price is inflated. They know you will pay it because you're already paying hundreds of dollars a credit hour for your classes! Why would you risk it by not getting the books?
I know as a student money was tight (who am I kidding? it still is!) If I could rent textbooks at the time I would have! There are different services out there you can rent your textbooks from but the one I point people to is Campusbookrentals.com. Why? Not only are their prices 40-90% off retail, your books are shipped to you free and it's free to ship them back. And most importantly - for every book that is rented they make a donation to Operation Smile. So you're saving money and they're helping out a great cause!
Trust me, I still understand what it's like to be a poor college student - consider renting your textbooks for your summer classes, or even this coming fall!
Oh yah -they have a bit of a sense of humor too :)