31k + TTL, approx 33k out of the door price - Please let me know if this is a good price for 2008 G35x with Navigation, Premium and Tech package. Approx 23k miles. In service date of Dec 2007, so about 2.5 years left on the warranty.

 

Have you entered the info on kbb.com? Also search autotrader to see what else is out there in your area.
It sounds like a good price to me.
I purchased an 08 g35x (does not have nav or tech package) for 27k. It had 6k miles.