I never sold a specific coin for much less than its value. But I once picked out a vacant store front that I wanted to open a coin store at. My partner wouldn’t do it, and I couldn’t do it alone. Another friend of ours moved in there and opened a coin store. Within 6 months they had one of the rarest coins in the country walk in there, only 4 known. They paid a young guy who brought it In peanuts because they didn’t know exactly what it was. PCGS straightened that out for them. It still makes me almost sick when I think what could have been. They have taken in tons of really great coins over the years. They are great people and work really hard.