I seem to pick up stuff all the time there. I picked up Sonic 1, Sonic 2 and Sonic Pinball (sucks) mint in box, on the genesis, for 2 bucks a pop. They also had ninja gaidan for the atari lynx a couple of months ago for 99 cents.
It is always good to keep an eye out. They seem to get random stuff all the time.
Also, i love looking through there vinyl records. I usually pick up 1 or 2 when i am there.