The Abhorsen Trilogy

From Author Wars - https://authorwars.com/publications/the-abhorsen-trilogy-72737.html

Overview:

Title: The Abhorsen Trilogy
Author: Garth Nix
Year: 2005
ISBN-10: 0060734191
Publisher: Eos / HarperCollins
Price: $19.99
Binding: Trade Paperback
Type: Omnibus
Title Reference: Sabriel
Notes: Box Set.