The post Amazon’s children’s book subscription ‘Prime Book Box’ opens to all in the U.S. appeared first on BardTech . Amazon today publicly launched a new perk for Prime members with young children, with the broad release of the new subscription-based “ Prime Book Box ” service. The $22.99 per box offering ships Prime members in the U.S. a curated selection of kids’ books every 1, 2 or 3 months, at up to 35% off the list price, Amazon says. The service was first launched in May, but was only available in an invite-only basis at that time. Members will receive 2 hardcover books or 4 board books per box, depending on the child’s age. The books chosen are curated by Amazon editors and include a combination of new releases, classics and “hidden gems,” and are tailored to the reader’s age range of “Baby-2,” “3-5,” “6-8,” or “9-12.” For example, some current selections include Amazing Airplanes, Don’t Let the Pigeon Drive the Bus!, Malala’s Magic Pencil, and Nevermoor. Ho...