I know what you're saying. You usually don't find too many bargains at gun shows. I usually go to see what prices are doing on stuff I already own. If I stumble onto a deal on something I like, I'll go for it.
Prices may be moderating a bit. A year ago, I bought an AK-47 NIB for $549. For several months after the shooting in Connecticut, the very same thing was going for $1200-$1300. This last Sunday, they were back down to $700-$800.