Hey all, I ran across this thread while searching for the same wheels. I live in the States and can tell you finding these wheels has been a chore. I've looked for many months, no vendors have any left as they have been discontinued for over a year. You will only find a set here used. I've actually found a set close by I'm going to look at today. They're going for $800 US with Nitto tires all around. These will go on my 05 G35 sedan. I fugging love these wheels!!
Here are a few pics of the Gravis1s on a zed (as you guys call it ) I found them on My350Z.com while searching.
And here's a couple of quick pics of my ride:
Hope this helps.