I went to my semi-local FYE to unload some DVDs and they told me they had a 20% off sale if you bought two used games. I got two games (one of which I'm probably going to return, yech) for less than twenty bucks.

Also, double check the used prices! I found several used PS2 games that had the wrong price on 'em. If they don't show up on the scanner, ask them if they can do a price check. I saw some Eyetoy bundles for seven bucks a pop (they were priced at $35).

Remember, this is VERY YMMV (your mileage may vary!)