1. The Da Vinci Code, by Dan Brown, Doubleday, $9.95.
2. Angels & Demons, by Dan Brown, PocketBooks, $6.99.
3. Deception Point, by Dan Brown, PocketBooks, $6.99.
4. Digital Fortress, by Dan Brown, St. Martin's, $5.99.
5. Against All Enemies, by Richard Clarke, The Free Press, $14.99.
6. Therapy, by Jonathan Kellerman, Ballantine, $9.95.
7. Plan of Attack, by Bob Woodward, Simon & Schuster, $14.99.
8. Trump: How to Get Rich, by Donald Trump, Random House, $9.95.
9. The Duke and I, by Julia Quinn, HarperCollins, $6.99.
10. Electronic Pocket Oxford English Dictionary & Thesaurus, Oxford University Press, $19.95.
Courtesy of Open eBook Forum. Based on sales through April 30, 2004.