Unit Price Game
Are you getting Value For Money?
The "Unit Price" (or "unit cost") tells you the cost per liter, per kilogram, per pound, etc, of what you want to buy.
Just divide the cost by the quantity:
Example: 2 liters for $3.80 is $3.80/2 liters = $1.90 per liter
Comparing Unit Prices can be a good way of finding which is the "best buy".
Read Unit Prices for more detail.