ARs were running around $1000, with several ‘conversion kits’ available for 1022s and SKSs to make them appear like ARs and M16. Auto loading shotguns sold well. I had several conversations over how to shorten barrels, legalities, etc. By Sunday eveneing I didn’t see a Remington 870 anywhere but in private hands. The reloader booth did an average business, and mostly ended up telling folks that they didn’t sell ‘ready to use’ ammo.
You really shouldn't be talking to the undercover ATF agents.