I'm going to a local gun show this weekend and am definitely in the market for a gun. Nothing fancy, probably a used Marlin 30-30 with a fixed scope, if I can find one. I'm not looking for the best deal in the universe, but am looking for a good condition used gun. I've looked at a few in local pawn shops and gun shops as well as on-line auctions so I have a good idea of what the general price should be.

Any advice? I've never purchased a used gun except from reputable shops - reputable meaning the type of shops that you can have a lot of confidence that you're getting good condition firearms that won't give you any surprises and they'll back what they sell. I'm looking for advice on potential pitfalls with gun show sales and what to be aware of.

As usual, thanks!