This is a set of vocabulary and idiom books perfect for TOEIC and university entrance exam preparation. (1) DUO 3.0 (2) Core 1900 ver.3 (with 2 CDs) (3) Business 1200 (with 3 CDs) The CDs included with (2) and (3) have been confirmed to play the beginning portions without any issues. (1) has a lot of writing in it. Also, they are generally old, so there is some soiling, but I believe there are no problems for studying. Please refrain from purchasing if you are sensitive to these issues. Due to work, shipping will be on weekends.