This app was designed for use in Japan based on Japanese law. When you shopping, Is there anything confusing which is good value different weight or different capacity? Do not have any concerns as to how much difference there is with the same capacity? Have you ever wondered how much you earn for mileage? Good value calculator resolves the confusion as below. 550ml 368yen, 430ml 265yen 450mlx3 594yen, 430ml 265yen tax-excluded price 98, tax-included price 104 100yen with discount amount 20yen