I would not hesitate to buy it.. the collective knowledge on the forum and a few hours of work, and you should be burning coal.. Even if you decide the stove isn't for you,, if the price is right, [ I'll say less than $400 ] Then BUY IT providing the motors and fans run when you plug it in.. Even if you decide it isn't for you then you can sell it quick on the forum classifieds.
If you can, take some digital photos and post them here. I think used coal stoves are going to get scarce and more expensive over the next few years !!