Let's see.
Pay to get in, pay to park. Pay to get in is fine, but the parking is too much in my opinion.
Fairgrounds are blah. Attendees population is too ghetto and trashy compared to other venues. Bad for private sales in my opinion.
Shootstraight dominates the show, its their show. Massive selection, reasonable prices considering they are a dealer. Not great, but I've seen worse. As far as others...Also depends on whether there's a panic buy or not. Unfavorable upcoming election results, or mass shooter event, or political push for gun control will bring prices up. Expect 50% below even blue book values on your trade ins.
The usual private buyers hanging around outside looking to buy anything from anyone at low-ball prices. Same faces every time, obvious proxy buyers.
Concession food that makes your high school cafeteria seem gourmet.
There's the beef jerky people.
There's the holsters, belts and purses dealer who has holsters, belts and purses that seems that no one would ever buy. Especially the purses. Maybe a 90 year old cowboy might get a belt.
A few knife dealers, mostly junk. A few swords and other gimmicky stuff.
A few "optics" dealers selling a wide array of Tacticrap NCStar grade optics.
Others selling Airsoft grade junk rails and gizmos.
Your typical milsurp tables with below-rack grade examples, lacking any finish, and stocks that look like they've been used to hammer railroad ties for 30 years, in a condition unsuitable to shoot, but more suitable for marking a grave site - selling for 4-5x what they should.
There's the stun gun guy - who is running the stun gun non-stop so that you can hear the buzzing crackling sound of it from a few aisles away.
You will see some people buying ammo like the zombie apocalypse is tomorrow. They will literally be carting it off in milspec cases on a dolly as you walk into the show. Presumably because it's a good deal and they save money buying in bulk. Then when you get to see the empty pallets where this ammo once was and see the price and you compare to the internet pricing even with shipping, you will be quickly reminded that there truly is a sucker born every minute. Hey, more power to the dealers. They got mouths to feed too.
There's always the idiot who is carrying an egregiously over-accessorized tacticool AR (almost as bad as that meme photo that's been going around for years), with a for sale tag on it - but who has no intent whatsoever to sell it and it just trying to show off or look cool.
You'll hear some people haggling, getting ripped off beyond belief but walking away like they scored the deal of a lifetime.
Just about anything high-end, or authentically mil-spec in terms of modern rifles or optics are usually behind glass or have a sign on it not to be handled. Prices are several times higher than internet. To the point that they aren't serious about selling them except to a complete sucker - they are just eye candy to draw people to tables selling Taurus and derringers.
The Nazi memorabilia table isn't always there...so luck of the draw.
You might come across a sale, but it will almost always be something very common. An XD or M&P pistol. Usually only on one specific model and caliber. If it so happens to be the one you want, you're in luck. However, while the deal is good at face value - when you factor in the cost of the show and parking, you can often get the same deal at a local dealer and save the hassle.
There's always a table or two where the owners sitting in chairs and are unresponsive to everyone, even people asking to buy their goods.
That sums it up.