When you stock up make sure your getting it the cheapest you can. Stockpiles usually last 4-6 months at a time. Sale rotations run every 6-8 weeks. Most all items can be frozen with the exceptions of a few dairy and produce items. Here is a great list of what you can expect to pay for standard stockpile items.
Chocolate Chips: $0.99 or less
Ground Beef: $1.75 per lb.
Chicken Breast: $1.67 or less
Chicken Quarters, Legs, Thighs : $0.65 per lb or less
Yogurt: $0.25 each or less per cup
Soda 12 packs: $1.99 or less
Soda 2 liter: $0.50 or less
Kraft Mac & Cheese: $0.40 or less per box
Juice 64 oz: $0.85 or less
Tortillas: $0.30 or less per package
Bisquick $0.90 or less
Oatmeal: $0.75 or less
Granola Bars: $0.50 or less
Fruit Snacks: $0.50 or less
Brownie/Cake/Cookie Mixes: $0.50 or less
Cereal: $0.75 or less per box
Ketchup: $0.25 or less
Mustard: FREE
Salad Dressing: FREE
Seasonings FREE
Popcorn Singles 3 count: $0.50 per box
Frozen Veggies: $0.25 each or less
Spaghetti Sauce: $0.50 each or less
Pasta Noddles: $0.25 or less per package
Deodorant: FREE$0.50 each
Ban or Suave Deodorant:
Cheap Toilet Paper: FREE
Lysol Wipes: $0.50 or less
Bathroom & Kitchen Cleaners: $0.50 or less