(Defeating) The Text Book Racket

The textbook monopoly in and of its self irritates me, but when you couple it with the premium placed on books by campus book stores it becomes downright infuriating. I purchased books earlier this week. Now I am going to return them because I found a slightly better deal. For your consideration:

Cases and Materials on Criminal Law,(American Casebook Series)
DePaul Bookstore: $155.75
Amazon.com: $131.40

Property Law: Rules, Policies, and Practices
DePaul Bookstore: $146.00
Amazon.com: $139.00

Pleading and Procedure: State and Federal Cases and Materials, Ninth Edition
DePaul Bookstore: $151.45
Amazon.com: $138.45

Federal Rules of Civil Procedure Statutes 2008
DePaul Bookstore: $39.50
Amazon.com: $35.55

Subtotal
DePaul Bookstore: $492.70
Amazon.com: $444.40

City and State Tax
DePaul Bookstore: $50.50
Amazon.com: $0.00

Shipping and Handling
DePaul Bookstore: $0.00
Amazon.com: $0.00

Total
DePaul Bookstore: $543.20
Amazon.com: $444.40

Savings: $98.80

What am I going to do with my windfall? Probably buy more books/study aids. I hear flashcards are a must for CivPro.