Walmart offers Sandra Boynton's Boynton's Greatest Hits: Volume 1 for $13.25. Choose in-store pickup to drop it to $8.83. (Amazon has it for the same with free Prime shipping.) That's the lowest price we could find by $10. This board book collection includes "Doggies", "A to Z", "Moo, Baa, La La La!", and "Blue Hat, Green Hat".