Some of the best mirror replicas can be found as close as Shenzhen, China.
"catch the train up to Lo Wu station, go through HK immigration and walk across the border into mainland China. Once you go through Chinese immigration and get though the thicket of taxi touts, the first building you see is Luo Hu Commercial City. Its five floors contain hundreds of tiny shops, mostly selling “brand name†clothing, shoes and accessories. There are also dozens of tailors who can make or copy anything. If you prefer, there are electronics, DVDs, souvenirs, home furnishings etc."
Luo Hu Commercial City is a popular tourist shoppers paradise. Polish up on your bargaining skills and regularly shop the stores in HK before going so you know how to tell if you're looking at a AAA mirror copy or a bad "you're gonna be laughing stock" knock-off. You're gonna have to ask around cuz they're not easy to get but definitely worth it when you do