The NSX is a reliable car, runs like a honda but with more expensive maintenance costs due to cost of parts. If maintenance costs is part of the equation for you in buying an NSX I would also consider knowing/finding a mechanic that is extremely familiar with the car as well. Getting screwed by a dealer who doesn't know what they were doing in the first place would surely put a bad taste in my mouth and possibly drive me out of owning one if I didn't have a good mechanic available to me here in Central Florida.
In any case.
TB/WP/Valves adjusted/Acc Belts and new idler tensioner pulley cost me about ~$1600. parts and labor 6,5 years ago...so maybe a bit more now.
Clutch for NA1 - is about $2500 - parts and labor (could be less if you get the OEM clutch, should of stated I had the SOS one in mind) I think the OEM is around $1200 for parts.
Hoses all of them, 23 total, parts and labor - is about $1000
Alignment was $100
Snap Ring issue is related to a manufacturing defect NOT design defect. Certain cars trannys were manufacutred within a certain range and as the tool wore the snap ring groove geometry changed, got wider, and allowed the snap ring to move more than it should eventually shattering and leading to damage in the transmission. Some people got lucky and when snapped there was no damage but they were smart enough to pull over ASAP when symptoms showed themselves and flat bedded to a mechanic...I would say there are only a few that got this lucky.
So you could buy a car in the snap ring range and get lucky and not be affected even though you are in the range or buy a car that has been fixed by replacing the upper transmission housing with a new one with the proper groove geometry. This was done on mine. Or like some, be told it was fixed and all the mechanic did was replace the snap ring itself...this is not the proper solution. Key thing here is proper documentation if it was repaired.
HTH
