IMO this is way over priced. I think the late 280z is a good car in its own right but will never be the same as a 240z. The first cars of a series generally command the highest prices when comparing similar cars. "Better" does not mean more valuable. Repainted and retrimmed does not mean restored and from the pictures this is not restored (just look at the door lock). I see this as a 25-30k car IMO. I don't believe prices have gone up much in the last 3 years.
Disclaimer: All this is just my opinion and not fact.