I'm not sure if there are any active or ex-military here that have been assigned to South Korea, but that place (at least around Osan Air Base) has a lot of shops that sell fake sports merchandise. You can go into a shop with a picture of any jersey and they'll make it for you. That copyright/trademark stuff is for the "silly white people". I was stationed at Osan in 1991/1992 and saw a lot of these jerseys being made & purchased. Never bought one myself (wasn't really into sports back then) but I would imagine that the fakes are much better quality nowadays.