Well I think as people unnecessarily raise the price of the Datsun vehicles/parts they begin to alter the market of the mighty Datsun without actually intending to do so.

Sure as time goes on harder to find parts/vehicles demand a higher sale price. But blatantly raising the price of a Datsun part/car 'just to see' if it'll sell is inconsiderate and uncalled for and unfortunately (in some instances) it triggers a rise all over the board in Datsun items because other people think what they have is just as worthy of being sold as a super-expensive, super-rare part/car.

Of course the guy has a right to sell the car for whatever he wants but if you really care about the Datsun then this guy (and the alike) are going to ensure that the price of Datsuns rise prematurely over time.

EDIT: Thats true mitch, you've got a really neat ute. Very envious....