Woot.com and Adorama.com has a refurbished Nikon D600 deal.
Refurbished Nikon D600 w/ 24-85mm lens – $1,599.00 – at Woot.com – Deal Expired
Refurbished Nikon D600 w/ 24-85mm lens – $1,699.00 – at Adorama.com – Deal Expired
This is currently lowest price for Refurbished Nikon D600.