So, I'm going to Los Vegas today...are there any good thrift stores or pawn shops to check out?

Also, I picked up a Gameboy Camera and Printer for $10/each (both are still in the box). Does it work on a GBA and is it worth keeping or is it crap? Since the thrift has a good return policy, I decided to get them eventhough I am not sure if I want them...

-Todd