If you don't know what craigslist is, you should! Craigslist.org is just like our old classified newspaper ads, escept that it is free to post an add, and many thousands more people use it.
There are so many survival-related items that you can get for cheap! Camping gear especially, people are always selling stoves, tents, firewood, etc off. Trailers, RV's, even mobile homes! An example: I bought an older rusted propane tank for $5. Then I took the tank to a gas station and traded it for a brand new one filled for $16. So I got a filled propane tank for $20, instead fo the $45 it would have cost to buy one.
CL also has a "free" section, that you can get all sorts of things (especially furniture!). When I was a teen furnishing my first apartment, I thought DRMO was my secret find, now its Craigslist, I could furnish an entire apartment for free tommorrow.
Anyways, any survival minded and self-sufficient individual should be checking this site out!
www.craigslist.org