ebay (via GetItDigital) has the Sony A7S for $1699 (compare at $2498) in limited quantity. Check it out here on ebay.
Note: This is labeled as a gray market item and, therefore, won’t include a US warranty card. At the time of this post, ebay seller GetItDigital has a positive feedback rating of 99.7% and offers its own 1-year warranty with the camera.