Bullshit. Price is a part of this equation.
The market has spoken already about the relative values and I'm sorry Hulk old mate you are wrong.
While normal XR8's are a fine fine car, they are falling into discount / run out mode. Whereas the Sprint, it's younger fitter brother is effectively sold out at full whack retail plus some.
I think this shows yet again people will pay for something special or extra. And Sprint ticks that box.