Last December I bought a bunch of 4.99 games at CompUSA. I think I bought 41 games, all different titles, mostly for PS2. 31 or so of them had $10 rebates on them, so when the rebates came it was like they paid me to take the games. I then turned around and used the rebate credit to get a Nintendo DS for free and pay for most of a really nice joystick. Both of which are collecting dust now, but that's a different matter.
I got Starlancer for 1.99 new at EB once too. That was probably the best value I've ever gotten out of a cheap game. Today I got Dragonball Legendary Super Warriors for GBC. No idea if it's any good since I have yet to try it, but it was only 2.99