You just need a seller who does not give a damn if he sells his GMC or not, and a buyer who is desperate to acquire one, then you will most likely get the best price........ but then there is no logic when it comes to buying a piece of history, I am extremely fond of my GMC. I have had her since the early 1980s and I still think that she looks and drives great ( I was weened on crash boxes in the 1950s) Its a great feeling to be able to go where and when I want, not where the military tell me too, like they did in the 1950s. I dont think that you can put a price on pleasure, its got to be worth whatever you are prepared to pay for it (Within reason of course) My last purchase was a 1942 Royal Enfield WD. CO. I paid top money for the bike when I bought it, only to find that I had another £800 / £1000 to spend on her to get it right.......... but I said then, never mind, twelve months from now I will have forgotten all about the extra cost. I was right, the bike performs great and I had forgotten all about the money ( At least, until now I had)