old military gear that smells and things you dont need
Hell that's the best reason to go to gun shows.
Every show is different. Some shows, yeah there's a lot of overpriced junk, but just don't buy it. I go to smaller town gun shows where I find locals trying to unload something they either don't need, or need money worse than the gun. Mostly I'm looking for old stuff-- I'd never go to a gun show for new "tacti-cool" stuff, but then, you'd have to chase me down to put that stuff in my pocket. I prefer blued steel and American walnut myself.
There are lots of good deals to be had, but as someone said you have to do your research and know what you want. If that's a brand new gun, buy it online. If you want an older gun, want to ask questions about the gun, look at it, look in it, look down the barrel and inside the action, drool over it, and generally get to know something about the gun, then a gun show is the place to be. I buy probably more than my share of stuff from Gunbroker and other online sites, but nothing beats picking up the actual gun and looking it over before laying down cash for it.