I ordered the one directly sold by amazon and it was genuine. It had the hologram sticker on the inside and I was able to register it on the ghd website.as far as the product ghds are the best straighteners out there and are well worth the cost.
Each flat iron has its own 15-digit code on hologram which can be verified at GHD website. - One 1" ghd flat iron with cap. Smoother gold plates glide effortlessly through the hair to make straightening on all hair types and lengths even quicker and easier, while their contoured edges help to create perfect curls and waves, all with a high shine, salon-style finish.
A replacement as loved the first ghd straightener I bought.