I just picked up one of the Back to the Future pins currently listed here on Pinside (the ad hasn't been taken down yet). It's the one listed in Minnesota for $2000. I have wanted one of these for awhile since it's one of my favorite movies of all time. I offered the seller $1,500 + $100 more to help me move it the 20 miles to my house and set up.

The machine is a 9 out of 10. It's almost flawless and you can tell it saw little to no use in a public setting. I'm very happy with the machine and will treasure it for years to come.

UPDATE: The one I bought several months ago, that is mentioned above has been sold. It was beautiful to begin with, but I decked it out in all super bright LED and it popped. I sold it on Craig's List for $2500. Sad to see it go, but flipped a $900 profit and made space for my new Metallica.