jarj: This month I was charged $12.63NZ for netflix thanks to currency conversion charges, bank not giving a perfect exchange rate etc. If you're with a bank that gives a more favourable exchange rate than maybe it would be cheaper, but atm in the real world it's cheaper for me to switch to the NZ version.
Sure, as long as you are happy with the content you get. I'll probably wait a year or so and have another look