In Australia there are consumer protection laws that cover similar situations. If a product price scans differently at the checkout than displayed on the shelf, you get the product at whichever price is lower, or the business must cease selling the item until the price is corrected.
In addition there is a voluntary code of practice that the big supermarkets have signed onto which states that if the price scans higher at the checkout than shown on the shelf, the customer is entitled to receive the first of that item for free and any subsequent items at the lower price.
In Australia there are consumer protection laws that cover similar situations. If a product price scans differently at the checkout than displayed on the shelf, you get the product at whichever price is lower, or the business must cease selling the item until the price is corrected.
In addition there is a voluntary code of practice that the big supermarkets have signed onto which states that if the price scans higher at the checkout than shown on the shelf, the customer is entitled to receive the first of that item for free and any subsequent items at the lower price.