Whatever merchant sells CarbonKlean charges a whopping $49.99, an exorbitant amount for this product that absolutely does not work. All it did was smudge my glasses. I'm trying to return the product but the packaging doesn't indicate the merchant's name or business. I've been doing some Internet research and I think I know who may be peddling this product, as well as two other products I purchased. If I find out, I'll provide that information in another Comment. Don't be fooled!