I've been using this for 3 years. I'm giving it away to anyone who needs it before I get rid of it. Only the handling fee and shipping cost are required, so I can't offer a discount. Case only. If you purchase it together with other items I have for sale, I'm willing to give it away for practically free (I'll either discount it by 300 yen or sell it as a set with another item). *Additional charges may apply only if the shipping costs increase due to oversized packages.