Note: This is likely a gray market lens. ebay seller GetItDigital has a positive feedback rating of 99.5% at the time of this post.
Several Sigma lenses are available with instant rebates up to $300 off through February 29. Check them out below.
Adorama has the Rokinon 50mm T1.5 Cine DS lens for $379 (reg. $549) for Canon, Nikon and Micro Four Thirds mounts. The deal is available through February 7. Check it out via the links below.