Interesting comparison.
I work for Ford (I know,...but it pays the bills

)and we have a Centennial White w/Blue stripes(a $5K option and they are about 1/4" off on the front

)at our passenger car dealership.Suggested MSRP is $155,845 and invoice is $144,207.30.I believe we have this car marked at $255K and the only reason why it's here so late is because of the delays with the front suspension recalls that Ford had early on before they went in-house with the forged A-arms.
For less than 1/2 the price (MSRP for MSRP),the '06 Z06 has to be the best value on the planet and maybe best ever(?)musclecar ever made.
I can't wait to see what they come up with next!