I purchased this online about three years ago. Saga Prefectural Police Academy A Selection It seems that this type of problem collection often uses the same questions for many years. I haven't compared it to this year's problem collection, but I think it's mostly the same. Retail price: 20,880 yen I used volumes 1-3 for studying. Volumes 4-6 are unopened. ☆Pass Level Problem Collection 1 Some pages have stains like in image 8. As shown in image 9, there are mostly pencil markings next to the question numbers, but there are also some ○☓ markings in pen. Also, there is one page with pen markings as shown in image 10. ☆Pass Level Problem Collection 2 One pen marking with a ○. Otherwise, there are pencil ○☓ markings. Several pages are stapled together. Page 41 is missing (as shown in image 11, it may not have been there from the beginning) I checked, and there are no problems with the content. ☆Pass Level Problem Collection 3 Almost no writing. It's clean. ☆Pass Level Problem Collection 4-6 Unopened I will ship via Mercari.