I'd been looking for a heater for my van, and I really wanted an Espar D4 but didn't want to spend the $2k for one. I ran across these that were being sold at a government auction, they use them in a variety of aircraft and vehicles.
The problem with these type of auctions is there are usually several in a lot that is being sold, I ended up with 9, that gives me one for my van and 8 taking up space in my garage.
They are brand new, not reconditioned, in the original packaging with the warranty/repair documents, the installation and owners manual on CD, the heater with the fuel pump and an install kit.
I'm not trying to make a killing on these but I've got my initial purchase price and fees, at least two days of my time and a 650 mile trip to get them. Again, they are brand new, and I think the price is more than fair.