Maybe they have just been lucky. In order to receive fines and/or penalties, the jerseys would have to be either picked up at Customs or else dobbed in to eBay by other eBay members. If no one has complained, then they could easily get away with it. Selling fakes is an extremely risky business and definitely not
something we recommend at Salehoo. But there will always be some people willing to take that gamble in order to make short term profits.