Compare prices by the ounce, pound, or any unit to find the best deal.
Unit price is simply the cost divided by the quantity. Comparing unit prices is the most reliable way to determine which product is the better value, since package sizes can be misleading.
For example, a 16 oz jar for $4.99 has a unit price of $0.312/oz, while a 32 oz jar for $7.49 has a unit price of $0.234/oz. The larger jar saves you $0.078 per ounce, or about 25% less per unit.