Warriors: Power of Three Box Set: Volumes 1 to 6 by Erin Hunter buy used Used & Rare price $34.29 new from $28.37 shop with confidence SPECIAL SHIPPING CONSIDERATIONS FOR USED & RARE ITEMS. Please see the special considerations for shipping Used & Rare items, including extended delivery times, possible import duties & taxes. Availability: Ships within 1 week Format: Trade paperback Publisher: HarperCollins Condition: The following ISBNs are associated with this title: ISBN - 10: 0061957054 ISBN - 13: 9780061957055 Seller Comments: Trade paperback (US). Glued binding. Warriors: Power of Three (Paperback). Intended for a juvenile audience. From the Publisher All six adventures in the #1 nationally bestselling Warriors: Power of Three story arc are available together in beautiful box set. This is the perfect gift!