Apparrently there's rules in place that prevent your average run of the mill salesman from selling the GT-R in the US. Only Managers and Dealer Principals are to be dealing with GT-R customers.
Bumping up prices on sought after models is pretty normal, the GT 40th anniversary and Cobra Falcons had a much larger dealer delivery fee than a normal car at the dealership I work at. There'll be opportunists trying to sell the cars above market value when the inevitable supply shortage happens anyway.
Still, the markups they're talking about in the US are huge. But then if buyers are patient, they'll get their GT-R without the massive markup eventually, it really just comes down to how much people are prepared to pay to get one quick. If there are suckers out there willing to part with that much folding, then dealers should be well within their rights to charge it. Supply and demand.