Adorama camera and Roberts Camera has a list of great refurbished deals on Nikon DSLR cameras. Below are some of hot deals:
Refurbished Nikon D4 – $2,995.95 – at Adorama.com
Refurbished Nikon D800E – $2,098.88 – at Robert Camera via eBay
You will get 90 days warranty from Nikon USA.