I have a Craftsman 2hp, 20 gal air compressor that I bought new about 10yrs ago. It is belt drive, and has a 110/220v motor. I have used it mostly for inflating tires, and running brad and finish nail guns. I do not use air tools for auto work. It has had an easy life, and spends most of its time just sitting around and is in excellent condition. I am thinking of downsizing to a small pancake-style compressor, but am not sure its worth the $ to swap it out. So, how much is something like this worth? Thanks.