You don't, after a couple of trips you learn that the show isn't worth the effort and expense so you stay home and run an internet sale and ship the orders as they come in.
Yeah, at $175 just to start clearing, it's hard to imagine anyone making much.
I was able to fondle some of the new poly pistols (and some CZ75 P-01s), but the only we bought was a damascus steel knife for my wife. Same guy we bought mine from last year.
Anything "Old" or "Tactical" is expensive. And the hundreds of "Rare" guns.... other than the 12 more on that same table, and the table next to it, and the table on the next aisle, etc etc.