There's an entire TV programme dedicated to this stuff - Fake Britain with Mat Alwright (or some such name). Given a cheap copy of a Disney toy, designer watch etc and there will be a market. Often dangerous to kids. We used to wind up a friend because he'd spent all that money on a genuine Rolex telling him that he could have got an identical one we'd seen when we on holiday, for under a fiver. Why anyone would be stupid enough to buy their kids a knock-off knowing that it won't come close to safety standards is another issue.