Compared to what scalpers do to concert ticket prices, most gun stores are not so bad.
Actually, we've taken to calling a certain segment of buyers scalpers. These are the guys who come by first thing in the morning looking for "black rifles" and magazines. They don't care about brand or specs. They just want the item. Usually, they'll be on their cell phone discussing pricing with someone on the other end.
It's a fair guess they're being purchased for resale at the gun shows at markups that make the most shrewd retailer look altruistic.