Instant purchase is welcome, no need to leave a comment. This is "DUO 3.0". CD is not included. The cover has a slight curl as shown in image 3. There are no writings or underlines, and I think it's a beautiful item, but please refrain from purchasing if you are sensitive to imperfections or if you are looking for a perfect item. I will ship it after taking measures to prevent water damage. I bought it to study, but I have started decluttering language study textbooks that I don't use. #DeclutteringAndBecomingAMinimalist LanguageStudyTextbooks