The Pendragon Series – D.J. MacHale – 10 eBooks
The Pendragon Adventure is a young adult series of science fiction/fantasy novels by D. J. MacHale published from 2001-2010.
Publisher: Simon & Schuster
They follow the chronicles of Bobby Pendragon, an American teenager who discovers that he, as well as his two best friends, Mark Dimond and Courtney Chetwynde, must prevent the destruction of the ten “territories”
The series has ten books:
The Merchant of Death