I've expired this.. the company looks so dodgy after further inspection. Reviews are absolutely dreadful on some websites and a comment on their own website confirms this is an imitation controller... "Ordered this controller from Dino Direct and was expecting a registered DualShock 4 controller. I received an imitation controller and was very unhappy. Please note that the vendor won't pay shipping if you have to send it back, and shipping items to China is very expensive from the US. You may be happy with this controller, but you get less than what you pay for in my opinion."
I saw this earlier, but was concerned that they weren't legitimate. They don't seem to have a top-down picture of the controller, which is a worry (they've sold knock-off DualShock 3 controllers in the past that replaced the logo on the PS button with something generic, which would have been a giveaway - so the fact that there's no photo of it here sets alarm bells ringing). I would pay a little extra and be sure of getting the real thing.
Likely to have import tax?
Chinese site? About as legit as fairies in the garden