Yabanize:
I disagree with paying GST on Netflix because I see it as an overseas purchase...
You're in NZ, buying a service with NZ currency, from a company that offers a NZ-specific set of products that are delivered from servers within NZ (see "Researchers map Netflix's content delivery network for the first time" http://www.qmul.ac.uk/media/news/items/se/180078.html). I think it is difficult to argue that you're buying from overseas.