Matthew and Patty Williams have created an online Grocery List tool for you.  Simply type in the item, the price from a past receipt, grocery ad, or your price book and the quantity and it will add it all up for you!  I can see this helping Darren when he needs to do the store run for me.  I can easily show him the price he needs to look for and where to find it in the store.

You can make your own grocery list here:  http://www.grocerylistwizard.com/