if you try to figure it out, only looking at what's on paper, it's hard to justify zhp's price. even on the road, it maybe hard to justify, but from everything i've read, and what i felt while driving, zhp is a better overall car than a g35. (for me anyway) but the 8 grand, or whatever exact figures comes out to is huge, and is enough to sway many buyers, and for that matter many editors at car mags.
i did enjoy the brute power of the g, but it felt harsh all the time. (the power's right there, but made the ride rougher than necessary. it really is matter of what you are looking for in your car, and you gotta go w/ what fits. and willing to pay the top dollar to have bavarian engineering go into your car.