If you're set on a Nitro Special then I would keep looking.
There is lots of them out there for less. That amount would get you a good field grade LC Smith, NID, Fox or others.

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=518032141

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=517904107

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=517768051

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=518957589