Yeah, I got taken by a kitchen table dealer on a 1st generation Colt SAA. The nickle plating was scratched in spots but not flaking off, and looked to be in fairly decent shape. Without doing my homework, I paid $800 for it.
When I showed it to a friend who knows SAA's like no one else, he told me almost immediately that it was a parts gun, and was worth maybe $450 tops.
I went to the dealer's home, which was in a really high-end neighborhood, and confronted him about misrepresenting the gun. His only answer, which he repeated every time I challenged him, was "caveat emptor."
Eventually I sold the gun for, IIRC, around $500 at a gun show.
The dealer died just a few years back, and I felt bad, but not too bad.
In the meantime, though, I bought every book I could find on SAA's. The ones I bought after that were the Real McCoy.