Knowledge is the cheapest thing to obtain and THE most valuable to have. You can make the amount for money that you have on hand go allot farther if you have the knowledge to provide the three basics.

Food: Can be harvested from a garden, gathered from wild eatables, trapped/snared/hooked/hunted, raised, bought on sale with coupons, and all can be canned/put-up/jared.

Water: Can be harvested from rain, collected from lakes/streams/condensates then filtered/pasteurized/treated.

Shelter: Can be bush-crafted/built/bought/leased.

Like I said knowledge is the cheapest thing to obtain and the more you have the less you need. Is it easy? HELL NO!!! Is it worth it? HELL YEAH!!!