What a lot of people don't realize is that it IS just a normal Skyline. In Japan the Skyline is just a commuter car that comes with different engines ranging from (I believe) 4 bangers, to turbo'd 6's.
You're thinking of the Skyline GT-R which while it has the Skyline name is really considered a different car. That's one of the reasons that Nissan will now just call it the GT-R and drop the Skyline name. It's confusing I know but we still might get the GT-R one day.
If Nissan sold even the R35 Skyline GT-R in North America it would probalby be about the same price as the Viper. And we all know how many people on the forum drive Vipers.