I work for Wal*Mart and countless times year after year this happens....Take the idogs for example....We already carry this item at a reg. price of 29.99, but when they decide to put something on sale for Black Friday they ship more of them in....LOOKING exactly like the ones of the shelf but they have a different upc #/barcode, so that the ones that are on the shelf are normal selling ones and then special black friday ones are featured somewhere else in the store...so its not that we are sneaky.....its just if you dont work in retail you really dont know the just of how they do it...just a little FYI for ya all.....if it is on the shelf ITS NOT THE ONE ON SALE....unless its later on in the day and they work into in the shelf if they have any left. Hope this helps