I think Stan summed it up succinctly.
"inner circle of a nationally known collectors group . Guy spent almost an hour going over the gun. ....... This was a graded gun, small bore, very nice condition."
One would hope for a semblance of ethics from such a group.
Not so much from the low end of the dealer class. There are many ethical dealers in my experience.
I do not believe a transaction was completed, the lady took her gun and went home. Good for her.
"Good thing she did know her guns. Like she said, "I may be blond, but not that blond"!!!"
As others have stated do your due diligence before the fact and you will not be caught with your pants down.