Also pawn shops, i found original xbox games for $1 at one pawn shop (some disk only but some was complete). When you hit a flea market and the booth is from a reseller, try to find games that aren't the recognized ones (marios, zeldas, metroids, etc) there you can find good deals. For example I got Conkers bad furday (xbox), phantasy star online (gamecube), mystical ninja (snes), Star wars old republic 2 (xbox), the warriors (ps2) and other ones that i dont remember now for only $5. For the thrift store, mehhh, in my country there arnt a lot of it, but i got a ds with mario ds for only $5, but is hard to find something there. Also, go to dvd selling store (electronic department store, etc) sometimes there have games between the movies, I got metal arms (xbox) for $1 and the game was in the dvd section.