Next time you’re at the store, look for pricing by unit rather than price for the item as a whole. You may be shocked to learn that in some instances, buying a smaller size of something might be cheaper than buying the large version. Especially if it’s on sale or comes in a multi-pack. Check things like laundry soap, dishwashing detergent, peanut butter, tuna fish.  Use the store’s unit price labels to find out which size package is the best deal based on the price per ounce, pound, or some other unit.