My sister’s been there for 10 years, cost of living is high as you’d expect for a large city, particularly accommodation if you want to be striking distance from the centre, but wage levels are good.
Comparison with UK prices is pointless unless your a tourist
True, but it’s relevant if you want relatives/ friends from the UK to visit you over there – the current exchange rate will make Oz holidays impossible for many right now and a year’s a long time to go without seeing any of your family for some people.
Great opportunity though – grasp it. You’re asking the right questions by the sound of it, you’ll be fine.