To tell the truth, I went to my 1st shows too late to have much respect for gun shows - I probably when to my 1st show in 2003 or so.
Every one I have been to has stunk - very high prices on any of the guns I have looked, all kinds of stuff unrelated to guns, lots of Nazi and Confederate crap, and walls of Paladin books on how to make illegal weapons. I am not particularly offended by any of that crap, but I don't want to buy it either.
I went looking for an Armalite AR 24 at the last show, and I found a total of one, and it was for sale at MSRP, and wasn't a model I wanted. The K31s I looked at years ago were 2x to 3x as expensive as the one I got at Aim Surplus. I thought I might save on powder and primers, but they were
more expensive than what I could get locally.
I think the Internet has pretty much killed them off. I haven't seen anything for sale at a gun show that wasn't for sale cheaper on the Internet. From what friends tell me, back in the day, you could find milsurp or police trade-ins that weren't carried by the local shops. But now it's all available on line.
I guess they serve a purpose for people who don't have a credit card, or don't to leave a credit card trail when they are buying their Paladin book on how to convert their Mini 14 to full auto with common kitchen untensils.
I am not knocking any of the dealers (except the folks selling the Aryan Nation crap), but I think that the gun show marketing model is just broken. It used to be that you could find stuff you couldn't find locally, or find stuff cheaper than you could locally. That just hasn't been my experience any more.
Mike