A special treat for Amazon Local users: my Overdraft: The Orion Offensive is one of 100 books that’s available for 99 cents through January 9 with a coupon available through your Amazon Local app. The voucher must be clicked on by December 19 in order to apply it to your account; thereafter, the discount will be automatically applied to purchases until Jan. 9, as I understand it.
The list of books in the program is here.