Thank you for viewing! Survival in the Dinosaur World Vol. 1 & 2 Survival in the Energy Crisis Vol. 1 & 2 A total of 4 books are for sale as a set. I am selling them because I no longer have the opportunity to read them. The list price is 1,200 yen per book, so this is less than half price. There are signs of use, but I think they can still be read. These are used children's books that have been stored at home by an individual. If you are concerned about the details, please consider another opportunity. We are waiting for your purchase only if you understand. Requests +++ ・Instant purchase → *⋆⸜ ᵒᵏ ⸝⋆* (Okay) ・Price reduction → ❌ (Not possible) ・We cannot compensate for any problems during shipping. ・If you have any questions about the product or would like additional product images, please feel free to contact us. ・The product images may look different from the actual product's colors. ・I work during the day, so I may not be able to respond immediately. Thank you for your understanding.