I consider collector car auctions to be most willing to be complicit to criminal fraud at worst, and grossly negligent in disclosure of facts at best.
Bring A Trailer seems to me not be one of those complicit. I had an O/T car I wanted to list with them. Five years ago it was in a hail storm and the insurance company wanted to salvage it. My wife liked it so we negotiated with them a bit. They finally said they would pay and I keep my original title, not a salvage one. We had the car fixed by PDR and it was flawless and still had the original paint. BAT agreed to list it until I got the CarFax on it the insurance company had turned it in as totaled. They wouldn't touch it after that, even with a disclosure.
I certainly haven't had as many cars as most of you guys here, but I've had a decent share go through my hands. All had their problems advertised or found later (almost always found later).
Just nature of the game. But maybe I'm not spending enough bucks to get that perfect one with no issues...
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I see Hemmings is getting into the online auction arena, supossed to fix the problems baT is having.
https://www.hemmings.com/blog/2019/07/25/hemmings-auctions-were-doing-it-our-way/?refer=musweekly