I wasn't sure which way you were swaying actually, so I went with my gut reaction, that it would do more than 15. I think, given the probability that they are increasing production and stockpiling for the holiday season, that 15 is definitely too low. I don't want to be overly generous though, so I'll stick to a healthy 17.
Threads of Interest:
The Movie Thread: http://www.vgchartz.com/forum/thread.php?id=6880
The Crow Eating Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=3886
The Betting Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=7104
Custom GIFs Thread: http://www.vgchartz.com/forum/thread.php?id=18963
The Greatest Game Ever Conceived On Any Platform
Tag: "I have tasted Obi-Wan's bitter tears"