Instant purchase is OK. Shogakukan Doraemon Science World ・The World of Robots ・The Wonders of the Earth ・The Wonders of Space ・The Wonders of Light and Sound ・The Wonders of Life Evolution and Fossils Social Studies World ・Secrets of Ancient Civilizations ・Geography and Life Around the World Inquiry World ・Do You Know? The Secrets of Names Added!! Science World ・The Wonders of the Body and Life ・Secret Gadgets Q&A Social Studies World ・Introduction to Law for Everyone This is a set of 11 books in total. Four books in image 5 have folds and slight tears in the cover (see images 3, 4, and 6). Except for the Inquiry World and the three added books, the covers are taped with cellophane tape to prevent them from coming off. The remaining 7 books are in relatively good condition. The three added books have slight tears on the cover (see image 8). Please understand that these are used items that children have used. This is a set price, so individual sales will be considerably more expensive due to shipping costs, so we are trying to avoid them. I think it would be a great addition to a Christmas present.