Depending---on a lot of things--condition, history, documentation, etc. I would expect the car to be in the mid $30K range. At $30K it's a bargin and at $40K--not so much. Try to find a local NSXPrime board member who will come over and take a look with you. Dealers get $1,500-2,000 for TB/WP svc. depending on location. There are better service solutions available if you are willing to travel a bit and trust in NSX experts like Barney at Ashland Motor Sports in Nashville. ($1,100. for TB/WP) He probably does 30-40 TB/WPs a year as well as anything you can come up with on NSX's. There are others out there with similar skills Like Brian at Source 1 in Cinci but get a referral from a PRIME member to get the best.
I too was a Porsche guy with 2- 928S4's behind me --then I retired-- to BMW E30 Verts and Honda Mini Bikes---yea quite a downgrade!
The NSX is a neat ride with plenty of fun both in performance and in looks. It is probably one of the better investments in the automotive world as there aren't many out there and they "AINT Makin them no mo"!
Drive it---feel comfortable, expect some normal "Honda" maintenance refreshing--with parts a bit more expensive then you would like but---NO ONE CHECKS OUT A PORSCHE ANYMORE AND EVERYBODY CHECKS OUT NSX'S TO THE EXTREME! Huck