Santa's biggest secret is revealed in The Elf on the Shelf: A Christmas Tradition gift set, with a North Pole pixie-elf (available with light skin or dark skin and dark eyes, as pictured), a hardbound children's book and a keepsake box. Launch date: October 15, 2009.
— Owner Diana Nelson of Kazoo & Co. in Denver told TDmonthly in fall 2009 that her store sells about 36 Elf on the Shelf sets per month.