So here's the deal, I am going to buy a portage and main ultimizer before the wonderful epa tells me I can't. I have the option to buy brand new ($8,700 plus tax etc) or a used boiler. The used one has been used in a garage and is only 1year old, well maintained, excellent shape. The problem I have is this, how does a guy go about pricing a used boiler? Are they like a car and lose 20% as soon as you drive out the lot or do they hold value better? Checked craigslist but can't find anything comparable... any insight would be great!