Amazon Prime Book Box is a relatively new program that started in May. It is a subscription service that delivers curated children's books every 1, 2, or 3 months. The titles comprise of a random assortment of books or parents can pick and choose 2 hardcover books or 4 board books from a rotating list. Each box is only $22.99 and saves customers up to 35% off List Price. … [Read more...] about Amazon Prime Book Box is out of beta