Recommend fisheye lens for NIKON?

I got a Nikon D200 DSLR camera. I'm a beginner in photography.

I need to take a picture of the room with wide angle lens (fisheye lens) in order to show almost entire room in one photo.

Can anyone recommend a fisheye lens for that purpose? I want to buy a used (but good) lens from Amazon or Craigslist with under $400 budget.

Now get another $200-300 to make your budget realistic, and get the
Nikon 10.5mm f/2.8G ED DX Fisheye Nikkor Lens, Sigma 10mm f/2.8 EX DC HSM Fisheye Lens for Nikon, or for a milder effect the Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Nikon.

Here is an outdoor shot taken with the Sigma 15mm Fisheye on a D90.

I would get a used manual focus fisheye AI or AI-S Nikkor lens. A fisheye lens are more forgiving when it comes to focus because of a larger depth of field, so there really no need for it to be auto focus.

http://www.ebay.com/...0887932736

Check KEH camera broker
http://www.keh.com/Camera/format-35mm/system-Nikon-Manual-Focus/category-Fixed-Focal-Length-Lenses?s=1&bcode=NK&ccode=6&cc=81136&r=WG&f

B and H used lens, they don't have any right now, but check back.
http://www.bhphotovideo.com/...4291315846