Welcome to Prime! As others have said, there is something of a variety among the NSX variants, but if you are just looking for a nice example of a red NSX without regard to engine or transmission, then you can find what you're looking for for about $30,000. A fully maintained original 91 to 94 red NSX in excellent condition will go for $25,000 to $35,000, depending on mileage, condition, etc. Note these cars all will have mostly black interiors and all black roofs.
The next step up is a 95 or 96 NSX-T, which is the T-top version of the NSX. A nice red car in this range will go for about $35,000. The typical range here is $30,000 to $40,000. These cars will have all matching red roofs.
After that, you are looking at more rare cars and the price will go up accordingly. A nice 97 to 2001 NSX-T will go for around $45,000, with the range being $40,000 to $50,000. These cars have the bigger engine (3.2 L) and the 6-speed trans, if that is important to you.
Finally, you have the "facelift" NSX-T cars of years 2002 to 2005. These cars are mechanically the same as the 97-01, but have fixed headlights and a slightly revised body. A nice car from this range will go for about $60,000, with the typical range being $55,000 to $65,000.
From your posts, it seems a red/tan 95 or 96 NSX-T would be the best solution for you. There usually are severall good examples for sale in the marketplace. Unless all the maintenence is up to date, plan on spending $2,000 to $5,000 to get any NSX you buy perfect. While they are Hondas and very reliable, they are still exotic cars and require maintenence. Most owners defer some of this work.