I earn my living off of table sales of collectables, I have dealt with crowds directly.. 1st rule people are there to get a bargain. If they wanted something at full price they can order
it off the computer today and it will be delivered to them at their door..
Good prices will overcome poor salesmanship skills as well as a poor table display.. in fact with crazy prices, sales are enhanced by a poor table display & lack of textbook salesmanship skills.
If I was selling at that show this week, I would get some kind of gimmick to get people coming back to my table.. Say a reverse auction ..Write a price on a tag & each hour drop the price by 10 bucks..
make a big deal out of it....You will have people coming to your booth every hour.. By the end of the show. Everything will be gone.. Hell if you do it right
you will not be going in Sunday morning.
Not sure that will be as effective on the Milsurp collectors but heck.....who knows.