I put a bid on a set of 6 6802 dekatrons, last week. I just put my maximum bid, and kinda forgot about it. Well I won it, for $46.60:
http://www.ebay.com/itm/390606000930
That works out to under $8 per tube. The tubes arrived today (seller only a short distance away), and the tubes are pristine shape, and all work like a charm. I think one of his mistakes was not showing the top of the tubes. I'm still a little surprised that I didn't get sniped.