Here is a list of the top ten bestselling signed books for December 2008 on AbeBooks.
1. A Mercy by Toni Morrison
2. A Most Wanted Man by John Le Carre
3. Netherland by Joseph O’Neill
4. Indignation by Philip Roth
5. 2666: A Novel by Robert Bolano
6. Widows of Eastwick by John Updike
7. The Audacity of Hope by Barack Obama
8. The Graveyard Book by Neil Gaiman
9. Brisingr by Christopher Paolini
10. The Story of Edgar Sawtelle by David Wroblewski