Everyone wants to save money. One of the best ways is to buy in bulk. Just make sure you have the room. Here's some items that you can save up to 40% on if you buy enough of it. Paper prodcuts like Paper Towel, toilet paper, etc. You'll always use it.
Toothpaste, white rice, light bulbs & batteries, aluminum foil, meat - just make sure you have a big freezer. When you buy these items individually, you tend to pay top dollar becasue you have to buy it right then.
One item I forgot to mention.. Hard Liquor. stays good forever.. no expiring shelf life and it will never go to waste.