I received a new one for my birthday, but I've only used the old one for about a year, so I decided it's a waste and I'm putting it up for sale. I hope someone who needs it will use it. I thought it was only for gas stoves, but when I looked at the bottom, it's flat, so I wonder if it can also be used on IH cooktops? Shipping costs 1050 yen, so I'm not planning to offer a discount.