This purchase of the Cortisol Clarity book by Dr Mehmet Yildiz includes audio files and complementary copies of both PDF and EPUB versions of the book. They will be available upon completing the purchase at the bottom of the invoice. There is no shipping cost for any of the digital products on this bookstore. If you have any challenges or have any inquiries, please reach out to me via a form on this link https://digitalmehmet.com/news-break-inquiries/