eBay.com top rated seller Get it Digital has a great deal on Canon EOS-1D X.
Canon EOS-1D X Body Only – $5,499.99 – at Getitdigital via eBay.com
Regular price for new Canon EOS-1D X Body is $6,799.00 at most US stores.
Note: This product is not technically eligible for a Canon USA warranty, and must be considered grey market. The seller does offer a warranty.