That one on ebay had a crap faceplate & no meter bezels. Nice cosmetics cost more. If you don't care what it looks like, some go for less. White Oak has new faceplates & even improved chassis. But again, looks cost.
Every one listed on the bay has the same devoted group watching & bidding. The market is there for sure. I'm way too rural to have a chance of finding used gear in resale or stereo shops.