I purchased my G37 3 days ago here in Georgia. Here are the details of my deal:

G37 Options included: Premium, Navigation, Cargo Net, DIO wheel locks.
Sticker price: $41666.04
Price Paid: $38024.15

Additionally, I got 2.9% financing for 60 months financing about half of the purchase price.

Two things I'd recommend: 1) Buy in the next 2 days. March is the fiscal year-end for Nissan Corp. You will be able to take advantage of the very low financing rate; and they are motivated to move the cars quickly. 2) Ask to see the invoice on the car. The dealer will very likely show you the true invoice. I paid $200 over invoice, but probably could have gotten it at invoice. I beat them up pretty bad over the trade-in value and just wasn't interested in squeezing them for another $200. The dealership gets most of their money on new cars from volume incentives direct from Nissan. In other words, they'd rather sell 200 G37s per month at invoice than sell 50 G37s at $2000 over invoice.

Good luck with your negotiation.

Fluxus