You don't need to bankrupt yourselves trying to build up your supply of food...(in fact, you should do what you can to avoid piling on the debt...), there are ways to build up your food supply and your other preps without becoming completely broke.
Here is a list I found that can help you build up a 1 year supply of food for the low low price of just $5 per week.
Happy shopping!
How To Create A Food Storage Supply For $5 Per Week