Here’s a wonderful site, Year of the Indie: May 2013 Top-Selling Indie Authors. which reports that in May of 2013, H.M. Ward’s Damaged sold 495,000 copies:
“Damaged: Peter is everything Sidney ever wanted in a man, but when things get hot and heavy Peter shows her the door. The next morning everything comes crashing down. The insanely hot guy from last night, the one who saw her half naked, is teaching at the front of the class.”
Yes, that’s almost half a million copies. In a month.