Amazon offers Prime members C.S. Lewis' The Chronicles of Narnia Paperback 7-Book Box Set for $22.49. Coupon code "HOLIDAY30" cuts it to $17.84. With free shipping, that's the lowest total price we could find by $7, although we saw it for $5 less in April. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $4.98.) It includes The Magician's Nephew; The Lion, the Witch and the Wardrobe; The Horse and His Boy, Prince Caspian; The Voyage of the Dawn Treader; The Silver Chair;, and The Last Battle.