Many years ago when I was earlier in the hobby, I walked away from buying a TAF. Playfield was black with dirt, mansion decals many worn off and something wrong with GI lighting (or many bulbs burned out). It was an awesome price though, the guy just wanted it gone. I felt it was over my head in repair. Guy was so nice that he said name the price I wanted to buy it for? I still passed. BUT, I told him what to get for it off of CL and do not take a penny less - it's true worth - since he was a nice man.
He was so thankful we sat around and talked for another 45 minutes, he gave me a brand new replica John Belushi remake shirt from Animal House and told me to call him in the morning if I change my mind. I called him and said "no thanks" again. He called me back later and thanked me. Sold the game for $600 more than he was thinking before we spoke. Tiny regret but feel good on that one. Every time I put that shirt on I think of that experience and wear it like a badge of honor.