If you're patient you can find a good used set in the marketplace:
Parts for sale (Private Classifieds) - Nissan 370Z Forum
PM Tazma if he still has his wheels for sale:
FS: Socal - NISMO OEM Wheels
Also, TE-37's are a good option to the Rays, here is a good set I'm selling for a friend
[SoCal] FS - (4) Gunmetal Volk TE-37's 19x9.5 (+22) w/ Cooper Tires