Textbook prices site

I thought that this might be a good example of a site that makes it easy for students to buy books for cheap. I know, many people/students may already know of this site, but for those who don't, you'll be able to save some phat cash buy checking out this search engine. It basically finds all of the cheapest sites throughout the web and gives a great summary of cheap e-commerce sites. Alright, I have given you a little not-so-secret secret, no fly with it.

http://www.campusi.com