Booking and airfares question

[Rich W]

Has anyone had any luck getting airfares on sale for a one way flight from another country to Australia and/or domestic flights within another country?

EG. I want to fly from Sydney -> Auckland, but coming back to Sydney from Queenstown. On Air New Zealand, it gives me the current sales special price to Auckland but not back from Queenstown to Sydney.

You get sale price both ways for a 'normal' return flights but not multi-stop bookings.

What I want to know is when New Zealand has sales to Australia, can I purchase these deals as an Australian resident?