What is the going rate for a dark fiber mile in the NE?

I am looking for a rough sense of current price per mile in the Northeast, USA region for one strand of fiber on an inter-city run of 50 miles or so. Yes, I know that prices tend to be all over the map, because I have received quotations all over map. However, I would be interested in other's recent experiences. The price I am particularly interested in is the one time, up-front, IRU price (Irrevocable Right to Use.) Please respond to me privately. If anyone is interested, I will summarize the replies. regards, fletcher