It's pretty rare for the UFC to post a video on their official youtube page like this one, asking fans if they missed it and showing some highlight footage from the event in hopes that they would purchase the event.  Or could they just be proud of the fact that their were some exciting fights, and want potential news fans to check it out?  The preliminary numbers for the event are reportedly somewhere around 350K-400K.  Whereas, the Mayweather/Marquez boxing match has reportedly done over one million buys as they went head to head on last Saturday night.