I can elaborate if you are more specific.
Well I've been looking up the kinds of jobs they have for software developers and 4k-5k AUD/month seems to be the normal. I also found out that there's no guarantee that we'll even land a job paying dollars in the range I've mentioned. My partner is interested in cars and drives a nice one here, whereas in Australia at least in the major cities, maintaining a car itself seems to take a chunk out of your earning. Not to mention the astronomical rental prices and daily costs. I know I am being vague but the gist of the matter is: we'd consider moving only if software developers over there are paid enough to allow them to travel frequently, own/rent a nice living space and live an active/exciting lifestyle without worrying about the finances - a state that we've already reached over here.