I've been seeing this more and more on Amazon. Sometimes it seems there is no way they could have arrived at the number.
Then they are stupid. Everyone knows that the price per ounce should be the price per ounce of actual product.
Bone-in is a well-known and often prized attribute. Adding the tray and the film isn't right.
Well, the bag can't weigh that much, right? But by law food product packaging must display the actual net weight of the product, i.e., the contents of the container, so by any logic, if not law, a store's stated per-ounce cost should reflect that figure. But since there's not any law regulating shelf statements, a store can say whatever it wants without violating any rules. So I guess the answer is more consumer legislation. Or simply caveat emptor.
