Many stores have a policy that if the price on shelf and price rung is different it is free, or gets lower price. I am a very conscientious shopper, and compare things like price per lb etc when I shop. I bought an expensive item, on sale, that rung up wrong. All I wanted was the correct price, even argued that I want to pay. The grocery store wasn't having any part of it, and the item was free. (this was 6-7 years ago) That was a policy above and beyond... Big Y, based out of Massachusetts. Gotta give them props.