There is a Sam Goody near my school which was going out of business, so everything was 50% off. I got SummerSlam 2003 for $12.99.
Then I go home, and head my way to the mall to exchange SummerSlam and save myself 13 bucks. I go into Suncoast to browse around, and I see CSI for $99.99. I couldn't believe how expensive it is, so I had an idea.
I went to Target, and bought CSI for $65.99.
I went back to Suncoast, exchanged it along with SummerSlam and got Firefly, Boogie Nights and Bully. I saved myself $45, which I think is a great idea.
Beating the system is great.