Well...
As I understand it, in the UK if a price label is on the product itself then the store must sell it at that price. However, if the price is on the shelf and not the actual product then they are under no obligation to sell at the incorrect price.
This is why, besides the logistics, big stores price mark shelves and not individual items.
I wouldn't be surprised if the situation is the same in the USA.
The store is also at liberty to refuse to sell any item to any customer they feel like.
Biting the hand that feeds IT
