No way would I pay that for a set of Rufs. Don't get me wrong--I absolutely love the way they look (my car's long-term original owner had them on my car for years), but that price is ludicrous. You can pick up an excellent set of used Fikse FM/5 or FM/10 on this forum for half of what this guy is asking, and the Fikse wheels are lighter, stronger and look killer on a 911/930.
My 2c.