The outside aisles of your store! Those areas are where you will find fresh items (produce, dairy and meat) which are cheaper per ounce than their packaged counterparts. It is also where you will most often find sale items known as loss leaders. Loss leaders are super discounted items retailers use to bring people into the store. They figure they will make up for the loss on the item because most people will also purchase other items while they are there. If you stick to the fresh foods and loss leaders you will save a ton!