DH used to travel to China for work quite a bit. As far as knockoffs are concerned, they don't really honor US copyright and trademark regulations, and they don't care. DH said he watched a store take in a crate of purses and stick designer labels on them. We obtained our own "Faux-lex" (that's what we called our fake Rolex) watches that were passable, and two or three that were obviously fake. As with anything coming directly from China, it's a crap-shoot whether it's genuine or made in someone's garage, because a lot of stuff does fall of trucks there, as well, especially apparel.
Slightly related story: I ended up making an online overseas purchase of a certain kind of liqueur several years ago that wasn't available in the MidWest US and I was unable to purchase from any US based online retailers. It was shady as heck, and the company kept calling and asking me to send a picture of my credit card and ID to verify my age. I canceled the order. They called me back again and waived the requirement for a photocopy of anything, and told me if customs calls, I should tell them it's perfume. I hesitated, but agreed because the liqueur was the perfect gift for my father in law. (Fortunately, I never was questioned by Federal Agents.) I watched my account for months afterward, but they never charged me for anything else and I did get what I paid for but I swore I'd never go that route again...shaaaady!
Beautiful jacket! I hope it turns out to be a great deal!