If you are a college student, then you know that textbooks burn huge holes in your wallet. Even the used prices at your college bookstore is a ripoff, and when you resell it to the bookstore you only get like 25% of the price.
I found this awesome website that does a price comparison using all the sites available to get the cheapest prices for textbooks:
Bigwords
Usually the search gives me the Used Amazon price or the Half.com price, but sometimes it gives me some other sites. I just puchased $350 worth of textbooks for summer for about $175.... Saved me about 50%.
BTW, if you are going to order from Half.com be sure to used the code 'SEMESTER' for $15 off $50.