$850 for that poor,DIRTY,Kirby Classic that looks like the last refugee from the trade in pile that was stored for many years in the shops shed!!Wouldn't give them $15 for it.Even if it works just looks too rude to pay $850 for it.Think the seller was breathing too much dust from that thing.And on those older dump bag Kirbys you can be sure the Emptor gasket is shot.The gaskets on those need regular replacement to prevent dust leakage-hence the photo lamps used by many vac salesmen.