I purchased these in bulk from Amazon over a year ago and have been storing them. However, I will no longer be using them, so I am putting them up for sale. The expiration date is April 2025, but I tested a product with the same expiration date and it worked without any issues. Two of the same product will be shipped. If you purchase a single item, the shipping cost will increase, so the price will be +500 yen. No discounts. Discount comments will be deleted to prevent frivolous inquiries.