New buyer

[Z1st]

Hey all,
I am looking at buying a Z for the first time. It is a 2011, Red with about 6000miles on it. Price of $37,200. This is a list of mods it has on it:
- Injen G3 Intake
- Full Fast Intentions Non-Resonated Carbon fiber exhaust
- KwV3 Coilovers
- Stoptech sloted front brake rotors and pads (in the process of being installed)
- Door handles color matched
- Sony DVD Headunit
- Back up rear camera
- Massive Audio N4 and NX4 Amps
- Hybrid Audio L6SE's in the door and Dynaudio highs mounted in the dash
- 3 Alpine 8 inch type R's
- Expel Clear Bra across the 1/4 hood and side mirrors


I am not too interested in the sound system, but that is something that I can part out. What I am curious of is this a good deal, or am I basically paying the same amount as a new one. Any other thoughts or opinions are wanted! thanks!