I'm not so sad about game crazy itself but its will be the lack of competition for Gamestop/EB that concerns me.
Having said that, I'm finding that Craigslist is a great resource for dirt cheap games as long as you have a little patience. I've put up "wanted" ads and have usually gotten what I asked for within a week at the most and usually for far less than what I would've spent at the aforementioned outlets. For instance I' bought my PS3 for 200 bucks which happened to be a rare 60gb model with the emotion chip and included a copy of COD4. I got GRID for 15 bucks about a month after it came out and other similar values.