Honestly, I have not found the pricing, at gun shows I’ve been to, to be very competitive. Maybe first few hours have good deals, but…in general, not a great deal.
So, mostly I go there to handle a wide variety of guns and figure out the full spread of any types I’m interested in. I might offer, but usually my fair price offers look ridiculous compared to the posted price. I tend to offer what guns are worth. Someone must agree with me as I’ve become a bit of an accumulator!
Ammo, powder, primers, brass are the same issue.
Honestly, I think most gun show sales are new gun owners, new buyers who get hyped up being in an environment that has lots of hype, excitement, testosterone and a way to say they are a real gun owner buying at a show!