How long did you last before you gave up counting? I tried this at Walmart once and made it to like 14 before I lost track in the cereal aisle. End caps, shelf tags, those little screens at the checkout, they all count and it never stops. By the time I hit the registers I was seeing sale signs in my sleep. It's kind of wild once you start noticing it, the whole store is basically one big ad. Good luck finishing the count, you're gonna need it.