Wait, Wait. I don't mean to be negative but how do we know this isn't a fake?
From what I've seen, that is a merchandising store. These stores usually sell OFFICIAL merchandising products provided by the artist's record label. Autographs, t-shirts, etc. It's usually limited stuff, especially when it comes to autographs. I'm pretty sure it's real so if you want one go get yours before they run out of it!