[S] Sigma 18-35mm F1.8 Art Lens for Nikon (USA)

I'm selling my Sigma 18-35mm for Nikon bodies. This lens is incredibly sharp and capable, but doesn't get any use because I've moved over to shooting on an EF-mount camera.

Condition is excellent, and AF has only been used a handful of times. Price is fixed since the lens is nearly new. Will ship. $575

http://imgur.com/a/reFEK