Dave Hardy said:
Clean IMO means 8/10 paint, no immediate attention needed, etc.
Yes, exactly. No, you can't get a clean NSX for $21K, not even with high mileage. I'll be happy to place a wager that any NSX for that price or less, and under 100K mileage, has something seriously wrong with it, and is not "clean". A clean above-mileage early NSX is going to cost $25-28K, and average or lower mileage will cost even more.
Dave Hardy said:
you guys consider 100K high mileage, while I consider it barely broken in.
For purposes of estimating market value, NSX mileage is above average, or average, or below average. Average mileage on NSXs is around 5K miles per year. So 70K miles is average mileage for an NSX. 100K is above average. That doesn't mean that an engine failure is imminent or anything, only that it has more miles than half the NSXs of the same vintage.
My over-under on this NSX, with its lame tranny and beat up body, is still $18K. If anyone offers you $20K for it, I would take the money and run! That's based on my observations of the NSX market, and evaluating selling and buying prices for over a hundred sales per year. But you don't have to believe me, or anyone else. Like Engel07 said, you can ask whatever you want for the car. Just don't be surprised if no one comes through and buys it for much over $20K. And please, please, please let us know how much you sell it for - because otherwise, we are going to assume that all of your hot air and bluster was intended to pump up the price of your beat-to-crap car, and when we don't hear from you, it will be because you will be too embarrassed to admit that we were right.