In this day and age, people are foolish to pay full price for ANY game. I do most of my game shopping online, and Amazon often offers $20 game credits on big new releases which can be used to put towards other purchases. Gold Box deals are great, too (DeBlob 2 just came out a couple of weeks ago, and I scooped it this morning for $20).
Might I suggest you guys check out this place
. I glance over the deals there every day, and I'm consistently amazed at all of the amazing games that I can get for cheap. With just a little bit of legwork, you guys will never have to pay more than 50% of standard retail value again. Just being smart and looking around a little has afforded me the opportunity to amass the gaming collection of a rich person. I mean, I've only had my PS3 for 14 months, and I already have 61 games (which drives my girlfriend up a friggin' wall).