Well I can't really blame them. Just as I cannot blame clickykeyboards for their pricing. If I was in that business, I wouldn't be in a hurry to sell stuff for whatever is the latest price someone else dumped it for on ebay. It's just a bit too easy too be critical about that. But they can hardly put any man hours into refurbishing or even just quality checking. No one will become a millionaire by dealing in vintage keyboards. Let these companies do their business. If you don't have much time and you make some reasonable money, I doubt you gain much by saving some money on ebay (where you put hours into getting that one Model M Spacesaver, just to see it being nicked last minute).
A max 30$ worth product with a 200$ listing price is just plain stealing. Of course every consumer should research their product before buying but it doesn't make the seller right.
In this case, they weren't trying to fool anyone though. It believe it was an honest mistake.