This is an outlet for Chinese (only?) companies. I find some of their prices remarkable. Often the goods come by air in just a few days. On some items I guess you might have to pay some duty. Even so, their prices are unbelievable.
I suppose the downside is that this kills western manufacturing that cannot compete with labour costs. Making in Europe or the USA we would not be able to compete on price. Making consumer goods more locally would stoke inflation.