My sob story;
I had this super clean '69 Belvedere wagon and I found a '57 Coronet I wanted more.
I told the guy I was going to sell my car on ebay, and to call me if he sold it to someone else so I could stop the auction.

I sold it and stalked him for a week until he came home. In that week he decided to give it to his nefew whom had been bugging him about it for a year.
I never would have sold my '69 except to get this '57 (or any '57-'59 mopar) but if he had been a man of his word, I'd of stopped the auction and kept it.