The Yankees are the most valuable non-soccer team in the world with a worth of $2.5 billion.
That was July. The Cowboys have surpassed the Yankees.
http://www.forbes.com/sites/mikeozanian/2014/08/20/the-nfls-most-valuable-teams/
For the eighth consecutive year the Dallas Cowboys, worth $3.2 billion, are the leagues most valuable team. The only sports team worth more is Real Madrid, valued at $3.4 billion,1. Real Madrid - $3.4 billion
P.T. Barnum was right.