First of all, don’t let anyone tell you that resell doesn’t matter. It absolutely matters. Just look at the price of Ford GT today and the price of a Porsche 911 Turbo from the same time period (996/997).
I got countless other examples, to name a few (R32, Golf R (mk6), 1M Coupe, Challenge Stradale, AMG SLS, 964 Turbo, 993 Turbo/GT2, 959, McLaren F1, the infamous Ferrari 250 GTO, F40, F50, Enzo, LaFerrari, manual 599, manual California and I can keep on going all day long.
Some appreciate initially due to limited supply but eventually depreciates and never look back.The R32, Mk6 Golf R and 1M Coupe definitely falls into this camp. Many people paid a handsome premium for the Shelby GT500 and the Corvette ZR1. I wonder if the Hellcats will follow this same pattern and whether the transmission choice makes a difference. Time will tell.
Some stay flat or even depreciate initially, but price picked up after a few years or in some cases decades. The 360 CS, AMG SLS, air-cooled 911s, manual 599 and even the mighty McLaren F1 and 250 GTO all fall into this camp.
Without a magical crystal ball, I obviously cannot predict the future. Besides, you probably won’t trade stocks based on the advise from an Internet forum, so why do that with cars?
Having said that, and at the risk of looking like an absolute fool in the near future, here is my uneducated guess. Initially the NSX will hold its value well. Once the demand of enthusiastic fans have been met after a year or two (depending on the speed of production ramp up and level of enthusiasm and patience), the depreciation will begin.
By then it will probably track the 991.2 Turbo (S) depreciation curve, which will be anchored down by the 991.1 Turbo (S). The exclusivity should help the NSX maintain a premium (in % of depreciation versus the 911 rather than nominal price), as well as a price floor many years down the road. However, if the hybrid system turns out to be a maintenance nightmare once warranty expired, then that price floor can and will crack very quickly.
- - - Updated - - -
I don't think there is any reason to think that the NSX will hold its value more or less than any other car in its class. It is not like a Ferrari in its first year of production.
Actually it should do reasonably well initially because of the limited supply, exactly like a Ferrari in its first year of production.
However, there is no reason why the NSX will appreciate 10 years from now. Not that I can see anyways. It's not naturally aspirated, not with a manual transmission, no gull-wing door, or being an modern interpretation of a classic design like the Ford GT. The performance is not exactly ground breaking and the driving experience has not been universally praised by the press.