MyListMate lets you to maintain a database of products that you buy, along with the price and unit for each product, and where you buy them from. When you create your shopping list, MyListMate displays a running total of the estimated prices so that you can determine how much you will spend. After you have shopped, MyListMate allows you to update Actual prices against the items you purchased. In this way, you can keep the estimated prices for your products accurate.