Amazon: CROC PROFESSIONAL, COSTCO, ULTA, PROSTYLING TOOLS, FLINGSTYLE. All other resellers on Amazon.com, Ebay.com, Overstock.com, Misikko.com, Sleekhair.com, and any other website the company deems unauthorized, are not established sellers of the Croc product line, and do not have a valid account with our company. We do not guarantee under warranty any products bearing our name or logo and purchased through an unauthorized website. Please make sure to check with our Customer Service Department to confirm if a vendor is an authorized seller of the Croc brand.