Bugger,I was thinking(a dangerous thing)about your shelter. If it is a case of not wanting to slum around,forget this post. Now if you do not mind dumpster diving(can be fun) you might accidentally find a good supply of materials.
My Son , however will travel to your residence and build you a "MAN-CAVE".Custom,if you please. PM me if needed.Put America back to work!
Oh, cost is material and$100./day