I had a bad experience at the new Bills store. We went Saturday before the Charges game and the inventory was very low. I spoke with a sales associate who told me they restock Saturday nights so that the store is full Sunday. This seems odd to me as a number of people travel from out of town for the game and want to buy gear in advance of the game. They lost out on my purchases and I am sure many others as the store was pretty crowded and the shelves were fairly sparse.
Also, when I was waiting at the gates for admission to the stadium there were a few fans who braved the crowds at the Bills store and bought gear at the store on their way into the stadium. Their purchases were in the bags used by the store (I believe clear plastic with Bills logo in blue. Security told them that the bags were not permitted in the stadium because they were not 100% clear and told them to either take all items out or take the bags back to their cars. You would think the organization would have the foresight to use bags that fans can bring into the stadium or, if not, at least make it well known so that fans are not surprised at the gate.