First, if any of you are not checking Amazon.com or eBay, or whatever to see if you can find your books, then you are blowing money out the window.
All you need is the author name, or the ISBN number, etc., which the Prof supplies to you anyway. On the Internet book sellers are many students JUST LIKE YOU who listed their old books hoping to get out of the Barnes & Noble buyback rip-off. Yeah, they probably run your bookstore.
Go Amazon, buy their used ones first. Save a bundle. Help students like you.
DO NOT BUY HORNBOOKS RIGHT AWAY, or study guides, etc. Remember, you want to find the study guide specifically geared toward your book, or written by its author. That means you only have ONE available. And any of the Legalines, Caselines, whatever lines books are fine. Better, use your free Lexis account and look the cases up there - they have all the basic facts AND all the Lexis notes. Better than a case line book - seriously.
You can find tons of people willing to kick them your way, often free, who never even used them. Sometimes you can find them abandoned in the halls of the school, left in lockers. Don't waste the money.
If there is a *MUST* have (mind you *everyone* has the *MUST* have guide) then go out and buy it. But maybe also look on Amazon and bn.com to see how people rate the guide before you buy it. See what other people say about other guides. You'll be thankful.
Don't forget, go forth with the knowledge that American law schools have a lot of problems. Here is the main problem, and how to fix it:http://accuracyblog.blogspot.com/2006/01/law-school-story.html
DEMAND MORE TESTS! DEMAND TEACHING ASSISTANTS!