A “sale” sign in a grocery store creates a powerful illusion of a good deal. However, for certain product categories, the markup is so incredibly high that even a “discounted” price is still a rip-off. These are the items that have the highest profit margins in the entire store. Retailers know that customers will often buy from them out of convenience or habit, without paying close attention to the price. Even when these five items are on sale, you are still paying a huge premium.
