Update: Amazon has now also reduced the price of the Nikon D600 camera.
Adorama currently offers several free accessories with the purchase of a Nikon D600 body:
If you remove those accessories from your cart and enter coupon code S123456789 during checkout, you will get $100 off the total price (this is on top of the current $100 instant savings - total $1,896.95 instead of $1,996.95 with free shipping and 4% in rewards):
The coupon code should work for all available D600 kits.
Nikon no longer enforces their MAP policy for the D600 and I expect the camera to be officially discontinued soon.