The last model year for the Supra was 1998, so I doubt you turned up anything for 1999-2000. :smile:
Sounds like that number is based on just a few cars, which means they can easily be skewed. Let's look at nationwide listings, which give a more accurate picture. Searching nationwide, right now here are the listings on Autotrader:
1997-1998
6 NSXs, average price $45,375
37 Supras, average price $39,340
1995-1996
8 NSXs, average price $36,800
38 Supras, average price $28,793
1991-1994
63 NSXs, average price $31,814
88 Supras, average price $27,523
It's also worth noting that a much higher percentage of Supras than NSXs have had extensive modification work done to them, thereby increasing their value.