A person who ordered my book in September has not received her copy. She was informed it will be shipping soon three times, the last email just today. I messaged Amazon today and at first they said it was delivered on 9/6. When I described the emails they cut me off after saying it is up to her to take it from here. So I believe it is okay to buy from Amazon if that is your preference, although it can be had at Barnes and Noble and Apple online stores.