The business world, my tortured universe for five decades. Worked for Corporate America, worked for myself. Followed my dad's advice, look yourself in the mirror, if you can't, walk away. Willing seller, willing buyer. A good deal is when both parties are a bit unhappy (quote from a former boss who was a certified sociopath!). It's hardly cut and dried. My take - you got a car you love. The seller sold it, he didn't have to. You made no misrepresentations of any kind, you played the cards that were dealt. Speaking from personal experience (you've read my posts), GTX's are a "thin" market. They go for serious money, but there are not a lot for sale, and there not a lot of buyers. I think you both made out okay. You should enjoy your car and not feel any guilt.