With this car I dont think the price is the important question. The key questions are how you intend to use the NSX.
Will it be a garage queen doing only a few thousand miles a year?
Will it be a daily driver doing what is was built to do and rack up 15k miles a year?
Is it the right NSX for you? You're currently looking at a selection of NSX which suggests (maybe wrongly) you've yet to drive the different models? This will be a non PAS solid coupe. The other you're looking at is almost the end of the line with all the latest tweaks, PAS, ABS and chassis upgrades. They are very different cars to live with and will suit the above scenarios differently.
If for example you're set on the OEM attraction of an original (some say the purest) NSX, wil keep it as a garage queen, then you are unlikely to find another like this.
But do heed Sudesh' comments. This car may need a fair amount of age related refeshing of components. Apart from the belts that will probably have been maintained, budget for brake overall, cooling system, control boards, geometry setting. In addition, it would pay you to look through the Refresh thread that Sudesh has produced and updated, and the Health Check thread. Both of these will give you a good insight to the items to look at and budget for, particularly on low use older cars.
HTH and good luck .... oh yes, the question was is it worth the asking price. Is there another 14k mile 1991 for sale? Nope. So its probably worth the price or very close to it.
regards,
Senninha
'Too many manufacturers today are obsessed with lap times and power outputs at the expense of emotion and fun' Colin Goodwin
S2 is signed by the NSX Project Leader Shigeru Uehara