Yeah, growing up in New Zealand I fixed many of my own and others' MacBooks/iMacs with aftermarket parts for this reason. We had no official channel, outside of shipping to Australia or further which required a 3-4 week wait, a potential invoice, and of course the entire time you're without a machine. It's a real bummer, because this is still the reality today, and some of these repairs are trivial (i.e battery).