I don't want to turn this into a gun-show-bash-fest... but I have found very little deals at shows. Normally it's the stock that places can't sell in their store front. To the shows I've been recently, it's been beat up singles and bolt guns at much too high prices.
I tried to buy a little used Rossi .410 shotgun (single shot, short barrel "survival type") at a show last winter... guy wanted $185 for it. I asked if he was willing to deal on it and he decided to lecture me on how I'm a dumb buyer and he's an experienced salesman and that he didn't give away guns. I hated to break it to this "salesman" that they are about $115 brand new at Walmart.