Sterling Acura in Austin, TX charged me $150 which was very reasonable. During inspection they found that the car had a small oil pan leak, a small scratch, and was missing the extra key.
They mentioned nothing about the timing belt, which had never been replaced. They also failed to mention that although my car only had 24K miles, I should consider performing the 90K service since I am already past 6-years.
I believe a PPI is a good investment, but I put a lot more faith into its findings then I should have.
If you are going to bring it to a dealer for a PPI you really want to find out if they have a tech who has worked on the NSX or gone through NSX training. The dealer throws the term "Acura Certified Trained Technician" around loosely, your dealer will have several Acura Certified Trained Technicians, but have any of those technicians gone through NSX training. Talk to the tech that my do the PPI, ask him what type of work he has done on an NSX. Find out about the tech through the community, ask if anyone has worked with him or used him before.
The last thing you want is someone who has only done an oil change on an NSX, doing a PPI on your car.