This guy already did it:
I guess I'll be next in lineJohn Locke Becomes the First Independently Published Author to Join the Kindle Million Club
John Locke is the newest member of the "Kindle Million Club," and the first independently published author to receive this distinction. As of June 19th, John Locke has sold 1,010,370 Kindle books using Kindle Direct Publishing (KDP). The Kindle Million Club recognizes authors whose books have sold over 1 million paid copies in the Kindle Store (www.amazon.com/kindlestore). Locke joins Stieg Larsson, James Patterson, Nora Roberts, Charlaine Harris, Lee Child, Suzanne Collins and Michael Connelly in the Kindle Million Club.