From Yahoo Sports Feb 26
The first female fight in the UFC wasn’t the only history UFC 157: Rousey vs. Carmouche made.
“It’s going to end up being the biggest women’s pay-per-view of all time, the biggest women’s pay-per-view fight ever,” said UFC president Dana White following the event.
Initial estimates on Wrestling Observer Radio put Rousey vs. Carmouche estimates “over 400,000″ pay-per-view buys.