This is the OEM DRL for those model years:
Nissan LED Daytime Running Lamps - 370Z :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com
For $700, that's nuts. I can make my own using off the shelf parts for a fraction of the price. What I like about the Philips one is that you can probably flush mount it on the bummer for a stealthy look. I don't have much of an interest since I already have high power LEDs in my headlights.