in my opinion gun shows are nothing more than junk shows.
+1
Buying gunshow reloads can be a crapshoot at best.
For cheap(er) ammo, the best way is to buy in bulk, or from the 'net.
Most of the locals around here that sell ammo are either just a tad shady or will sell anything without regard to quality.
If you look closely, you will see reloads with prices at or near commercial new retail prices. Of course, they are 'the best', 'the hottest' or 'tack driving'. Too many FFL06 holders are folks who bought a 650 or a 1050 and load in their garage. Nothing bad with this per se, but if you do decide to buy reloads from an unknown source, make sure they have a current liability insurance policy and you know where to get in touch with them.
Two reloaders that have gained a good reputation are Georgia Arms and Dallas Reloading. I know GA has a website, I don't know about DR. I am sure there are others, but none come to mind right now.
Several online sources offer savings over most brick and mortar local retailers. Cabelas, Ammoman and AIM occasionally have sales or specials that can save you a buck or two a box.
In any event, reloading is MUCH more economical. You won't save money too often, but you will be able to shoot more for a lot less - and be able to tailor loads any way you wish.
The other real benefit is not having to find a retailer that has your preferred ammo on the shelf when you want it. If you decide at 9:00 PM Saturday night, you are going shooting Sunday afternoon, you can have ammo ready to go without ever leaving home.
Good luck in your search...
BigSlick