Ed is right.."buy with your gut, not your head". I once thought with my head at a Bonhams auction. I watched a car I wanted go well, well, over the house estimate. I thought the house knew something I didn't, so I backed off. Biggest mistake of my life. I've searched and searched for a similar car for less money, not to be found. I would gladly give the hammer price in hindsight. My cars which I enjoy the most are the ones I bought with butterflys in my stomach and stars in my eyes. Maybe I overpaid for a few cars, but I'm still excited like a kid again over the cars I bought with my gut -"Priceless". I would suspect most cars are sold within a 20% range +/- of their real value. If you can't accept a 20% margin then you will never truly enjoy what you have.