The Abhorsen Trilogy

From Author Wars - https://authorwars.com/publications/the-abhorsen-trilogy-80236.html

Overview:

Title: The Abhorsen Trilogy
Author: Garth Nix
Year: 2003
ISBN-10: 0739432176
Publisher: Science Fiction Book Club
Price: $14.99
Pages: 777
Binding: Hardcover
Type: Omnibus
Title Reference: Sabriel
Notes: First edition thus
SFBC ID #59396
Info from Locus1.