Please refrain from price negotiations, requests for exclusive sales, and immediate purchase offers. Discounts will be considered depending on the situation. I will not respond to such inquiries. I cannot accommodate requests regarding shipping dates or arrival times. If you need the item by a specific date, such as "I need it by the ◯th," please do not purchase. ■ This item was purchased new and opened, but it is unused (the case has been opened, but the filter has never been touched). ■ No smokers or pets. ■ Returns are not accepted to prevent product substitution. ■ Shipping will be via Yu-Yu Mercari Bin (no specified arrival time). It may take some time for the shipping status to be reflected in the system after shipment, and it may take several days for the item to arrive. ■ Please purchase only if you understand and agree to these terms.