I'm a bit late to this and the sale ends tonight, but for Audible members that see this in time, there are some good titles on the list for $4.95:
Boyd: The Fighter Pilot Who Changed the Art of War
Hedge Fund Market Wizards
The Brain That Changes Itself: Personal Triumphs from the Frontiers of Brain Science
Big Data Baseball: Math, Miracles, and the End of a 20-Year Losing Streak
Big Data: A Revolution That Will Transform How We Live, Work, and Think
The Talent Code: Unlocking the Secret of Skill in Sports, Art, Music, Math, and Just About Anything
How Bad Do You Want It?: Mastering the Psychology of Mind over Muscle
American Ulysses: A Life of Ulysses S. Grant
From Bacteria to Bach and Back: The Evolution of Minds
Welcome to the Universe: An Astrophysical Tour
The Dharma Bums
Once an Eagle: A Novel
