I've found some impressive deals at some stores, and then they'll have prices on something that are totally out of whack with the rest of the world. At local Movie Trading Company stores (owned by the Vintage Stock chain) I've bought Rescue Terra I for the 2600 for $1.99, Lunar for the Sega CD for $19.99, several others that I can't recall off the top of my head too. Then one location will have Atari 2600 Space Invaders marked up to $9.99 in their expensive game case for no real reason, but have thirty on their regular shelf for $1.99 each.
Sure there are some classic game places that tend to overcharge, but not all of them. You know, when I really started collecting more than casually, around 2003, there was only a stall out at the local flea market that had any old games. I had to dig through loads of grungy thrift stores to find anything, but I did end up with a whole lot of good stuff that way. Now, all around the Dallas area there's heaps of shops with classic games in them. There's 13 Movie Trading Company locations, four Console Game Exchange stores, two Play N' Trade stores (with a third one opening up soon), two FX GameExchange stores, and four local independent stores, along with the aforementioned guy out at the flea market. In my area, we are absolutely spoiled as far as classic gaming goes. It's a damn good time to be into retro gaming around these here parts.Sorry if it sounds like I'm rubbing your nose in it, it's just that I'm pretty happy about it.