Start your food storage for $5-10 week.

This is a list from LDS preppers.   It was originally on $5 a week & the prices are a bit out of date, but it sure is a starting point.  Either raise it to $10 a week, or cut the amount in half where necessary.  Costco or the LDS cannery has the cheapest wheat prices usually.

• Week 1: 6 lbs salt (25 lb bags of salt at costco are under $3!)
• Week 2: 5 cans cream of chicken soup
• Week 3: 20 lbs of sugar
• Week 4: 8 cans tomato soup
• Week 5: 50 lbs wheat
• Week 6: 6 lbs macaroni
• Week 7: 20 lbs sugar
• Week 8: 8 cans tuna
• Week 9: 6 lbs yeast
• Week 10: 50 lbs wheat
• Week 11: 8 cans tomato soup
• Week 12: 20 lbs sugar
• Week 13: 10 lbs powdered milk
• Week 14: 7 boxes macaroni & cheese
• Week 15: 50 lbs wheat
• Week 16: 5 cans cream of chicken soup
• Week 17: 1 bottle 500 multi-vitamins
• Week 18: 10 lbs powdered milk
• Week 19: 5 cans cream of mushroom soup
• Week 20: 50 lbs wheat
• Week 21: 8 cans tomato soup
• Week 22: 20 lbs sugar
• Week 23: 8 cans tuna
• Week 24: 6 lbs shortening
• Week 25: 50 lbs wheat
• Week 26: 5 lbs honey
• Week 27: 10 lbs powdered milk
• Week 28: 20 lbs sugar
• Week 29: 5 lbs peanut butter
• Week 30: 50 lbs wheat
• Week 31: 7 boxes macaroni & cheese
• Week 32: 10 lbs powdered milk
• Week 33: 1 bottle 500 aspirin
• Week 34: 5 cans cream of chicken soup
• Week 35: 50 lbs wheat
• Week 36: 7 boxes macaroni & cheese
• Week 37: 6 lbs salt
• Week 38: 20 lbs sugar
• Week 39: 8 cans tomato soup
• Week 40: 50 lbs wheat
• Week 41: 5 cans cream of chicken soup
• Week 42: 20 lbs sugar
• Week 43: 1 bottle 500 multi-vitamins
• Week 44: 8 cans tuna
• Week 45: 50 lbs wheat
• Week 46: 6 lbs macaroni
• Week 47: 20 lbs sugar
• Week 48: 5 cans cream of mushroom soup
• Week 49: 5 lbs honey
• Week 50: 20 lbs sugar
• Week 51: 8 cans tomato soup
• Week 52: 50 lbs wheat

Also watch for sales.

If you get all this, you'll end up with:

• 500 lbs of wheat
• 180 lbs of sugar
• 40 lbs of powdered milk
• 12 lbs of salt
• 10 lbs of honey
• 5 lbs of peanut butter
• 45 cans of tomato soup
• 15 cans of cream of mushroom soup
• 15 cans of cream of chicken soup
• 24 cans of tuna
• 21 boxes of macaroni & cheese
• 500 aspirin
• 1000 multi-vitamins
• 6 lbs of yeast
• 6 lbs of shortening
• 12 lbs of macaroni

I've been told this will do 2000 calories a day for 2 people for around 300 days.  Not bad for $5-10 a week!