System Mathematics ① for Integrated Junior and Senior High School Education Algebra Edition Price: 764 yen (excluding tax) Workbook Price: 682 yen (excluding tax) These were used in class. There are a few places in the workbook where there are markings in pencil and ballpoint pen. I plan to erase what I can with an eraser before shipping. Also, since my name is written on the back cover, I will black it out with a marker before shipping. Thank you for your understanding. Please consider purchasing. m(_ _)m