Yes and only this week I wrote a letter to Corporate HQ advising of this happening. And the Internet profit they were gaining form the exuberant mark up on the items and when we the customers could not buy any! Ever!
I advised they should limit purchases to two boxes of ammunition per customer per day. And list any employees buying every day depriving the customers who keep the stores a float of buying merchandise. If they objected to having the amount they buy recorder then they would not be allowed to buy any or could quit!