Express delivery is 5,000 Yen (this is not factored into the discount)

Discount is 25%

You can also request an ATM card in which you can deposit your money into a special account that is secretive, because using cash also costs an additional 2,000 Yen (the card costs 5,000 Yen, but after that its free to use as much as you want since its a special account opened, and if you lose the card they give you a new one for free). So you will have to pay 14,000 Yen in additional fees for conveniences sake.