Supermarket corporate marketing teams use elaborate packaging designs to confuse shoppers about the true value of goods. Large boxes and colorful labels create a strong visual illusion of an incredible financial bargain. Frugal consumers bypass this visual confusion entirely by implementing one strict mathematical rule during their trips. The per-ounce rule requires you to ignore the main retail price and focus on the unit cost. Let’s explain how mastering this single shopping rule can save you hundreds this calendar year.
