I've bought a few Ugly items from KEH. The only LTM lens is a Canon Serenar 35mm f2.8, for some ridiculously low price. I tossed it into my cart with something else. It was definitely ugly, with lots of haze and some corrosion on the chrome. It cleaned up to usable condition, so I was happy.
Roberts Camera/UsedPhotoPro is a lot more descriptive, which I like. FWIW, I've even bought a couple "Parts & Repair" items from them simply described as "untested" which turned out to be entirely serviceable, at least as far as I've been able to tell. When they say something is untested it seems that it is true, so you might get lucky.
Oddly enough, KEH's "outlet" account on ebay also is also often more specific than their actual web site, with what appear to be actual item photos. Different product listing workflow, I guess.