Please comment before purchasing, as this item is also listed elsewhere. ★ Single item purchases are not allowed. ★ There is no price change for swapping out used books within a set, including new releases. (If you wish to swap, please specify the title of the new release and write "Swap with used ○○") You may also choose one book from the 2-for-600 yen sale (excluding sets by the same author), but please "like" the books to make them easier to find. ★ For swaps from the page "Bundled, Individual Sales Possible, Swaps with Sets Including New Releases," an additional 40 yen will be added. ★ For swaps from the 2023 release page, an additional 100 yen will be added. ★ For swaps from the 2024 release page, an additional 200 yen will be added. (In any case, swaps into sets of 800 yen or more will not result in a price change.) ★ For sets of new releases, the price for a set of new releases will be a flat 1250 yen, including shipping, up to the 800 yen range. ★ Please do not ask for the price without considering the above. If you want a new release set, I will immediately create a dedicated listing, so please purchase within 5 hours. ★ If you are unsure which used book to swap, you can purchase first and choose by 2 days before the shipping deadline. Please check the available books below. Those with no transaction history or only a few transactions may be asked to purchase within 2 hours of my response, as some people check stock for fun. Others, please purchase within 6 hours. (If you comment late at night, I will create a dedicated listing early in the morning, so please purchase immediately after waking up.) ★ Prices are generally determined by searching for the book title and adding 150-200 yen to the listed price. Therefore, prices may be lowered or raised. ★ I plan to lower prices to 650 yen, but swaps at that price will incur an additional 50 yen. ★ The author's name in the title is for a new release. ★ Important requests regarding transactions are listed, so please check my profile and, after agreeing, write "[Profile checked]" and send a message after purchasing, even if it's just a short one. ★ For convenience store payments, please pay within 24 hours! ★ I get emotionally down when people back out after I've calculated the price (T-T) ★ Please be sure to check the price yourself before commenting, as some people back out after inquiries. After commenting, do NOT immediately purchase the dedicated page. ★ Returns are not accepted for any reason. ★ Price reductions are not possible.