This is a set of 5 books for memorization and study for junior high school students. They are useful for before tests, for everyday study, and for interviews for entrance exams. They are all easy to read with illustrations and colors. They have some wear and tear as they were stored by a junior high school boy, but the inside is in relatively clean condition. Individual sales are possible, but the shipping cost is the same whether you buy one book or all five, so it may be more expensive. Please note that the books will be simply packaged with only water damage protection.