I'm not trying to rain on your parade, but you can buy a brand new 20lb tank shipping included off of Amazon for $125 (pay $3 more, get it prime). The cost to fill, depending on where you are located, is $10-$30. I just bought a used 20lb tank with a recent hydro for $50 and I can fill it for $12 in a large city. You might be shooting a little high here.