You can play up to 4 games at a time for free. I joined for the year for 20 dollars you can play unlimited games. It has lots of cool maps an variations you can play teams very cool site.
I dont know how accurate these are but here you go.
http://www.donbest.com/website/html/freeod...ges/nfl.shtml?4
http://www.vegasscoresandodds.com/matchups...ds&LeagueID=nfl