Though the Amazon top 100 has a tendency to skew toward nonfiction, the genres and topics to be found in preordered books shows a healthy variety, from memoir to children's books to comics. The 50 Shades trilogy constitutes the top three preorders, followed by Rachel Maddow's upcoming Drift: The Unmooring of American Power and The Lean: A Revolutionary (and Simple!) 30-Day Plan for Healthy, Lasting Weight Loss by Kathy Freston.

The following preorders made Amazon's top 100 as of the morning of March 22:

5. Fifty Shades of Grey by E L James

9. Fifty Shades Darker by E L James

10. Fifty Shades Freed by E L James

12. Drift: The Unmooring of American Military Power by Rachel Maddow

13. The Lean: A Revolutionary (and Simple!) 30-Day Plan for Healthy, Lasting Weight Loss by Kathy Freston

28. The Big Miss: My Years Coaching Tiger Woods by Hank Haney

30. The Serpent's Shadow by Rick Riordan

32. Deadlocked by Charlaine Harris

43. Tax-Free Wealth: How to Build Massive Wealth by Permanently Lowering Your Taxes by Tom Wheelwright

54. The Last Boyfriend by Nora Roberts

62. Lover Reborn by J.R. Ward

65. Let's Pretend This Never Happened: (A Mostly True Memoir) by Jenny Lawson

70. Loving by Karen Kingsbury

78. The Duckling Gets a Cookie!? by Mo Williams

80. Spider-Man: Ends of the Earth by Dan Slott and Stefano Casseli

86. The Wind Through the Keyhole: A Dark Tower Novel by Stephen King