I flipped through it but haven't read it. Please understand that this item has been stored at home. Product: Subscription "Customer Success" is the New Business Model that Generates Revenue Author: Tien Tzuo [Price & Shipping] - Price: 400 yen (Product: 360 yen, Mercari fee: -40 yen) - Shipping fee: Included in 210 yen - Discount: None *Please note that we cannot ship to Okinawa and remote islands. *It will take approximately 4-7 days to ship. Please refrain from purchasing if you are in a hurry. *Please note that we do not accept returns.