FYI I bought my Z about 3 weeks ago: brand new never sold 2009 chicane yellow, touring coupe with carpets/mats, lighted kick plate, no navigation, manual. Bought for $28.5k with life time free oil change.
Might not be the BEST deal but I hope it'll give you some ideas
Edit: My price was MSRP - $7500...dealer won't go any lower but instead offered free lifetime oil change :\