With every car, you pay for the looks. No one wants an ugly car, and the same "Why not just buy ------ and mod it instead..." works for all but the most inexpensive vehicles. You buy a Ferrari because it looks like a Ferrari. You buy a Z06 because it looks like a Z06. Obviously performance is a necessity but any car can have it, not all can have the look and feel. Another thing the Ferrari price tag allows is excellent quality, which you pay for. Where GM had to save $5.00 on this part and that one to get the Z06 under $60,000...Ferrari did not.
I wonder how much maintenance is on the car. I know a clutch for a Diablo costs around $8,000, and you have to remove the "tiny" engine to install it. And it wears it out pretty fast...