To close the loop on this. I did inspect it - there were a couple of deep 1/8" gouges on one side, likely from being moved - and one of the bottom levelers was broken off. But it had lots of optional sliding shelves, and worked properly. Overall, it seemed to be in fine condition. So I ended up buying a 2013 production Model 266 for $900.
For anyone considering used Eurocaves/wine fridges
I think most people should plan on taking two adults to move these, along with a strong dolly cart. The rinky dinky folding ones won’t handle a larger one. If you have a furniture strap, all the better. Remember to keep it standing for a few days after moving so coolants can settle.
Ideally, a knowledgeable seller is more helpful so that you understand what you are getting. But you are less likely to get a deal, and simply less likely (IMO) to find clue laden sellers on platforms like CL or FB markets. A ‘wine guy’ selling their own fridge is likely to be able to sell it within his own trusted network first. So I would not get hyper about interrogating advert posters. My seller knew nothing about the EC, and their inability to describe it (or get on the phone about it) probably limited interest in it. (The ad was literally “Eurocave $price” no picture, no model, no description)
Confirm all your payment terms and conditions before heading out. Think carefully if things seem sketchy / weird to you. Take a buddy.
I believe the most important thing is to simply see it operable when you arrive. Take your own temperature gauge. If someone says the unit is in a place where it can not get electric power, ask them to use an extension cord, or in extremis, take your own. Personally I would not be interested in that kind of situation - if someone is unwilling to prove/show an electrical appliance for sale can power up and hold temp - I don’t think it makes sense. I had to really push my seller to set it up ahead of time and set the temp to the 50’s, so I could see the fluctuations, if any. But again, they didn’t understand the point of the appliance, and just kept saying how ‘nice’ it was. I think they thought it was furniture/racks and didn’t grasp the import of cooling.
So far, I’m happy, having leveled it and started migrating some items into it. The footprint seems fair given the capacity, and the size was manageable for getting around our single story, and mostly flat house, with older doorways.
I have not tested whether the rated capacity is realistic or not. I was never really able to get 57 btls into my older undercounter GE.
Thanks to those who chimed on this thread, as well as posters in other threads from where the checklist was cribbed/cobbled from.