@muminwestlnd That COL website is total BS. There is no way a 1 bedroom flat in centre Sydney cost $785 per week ($3400 per month), no way. More likely $1400 per week in the CBD. And $522 a week for an outside of centre flat? Where on earth!!! unless, you really like grotty and moldy places.
And no, Levis 501 Jeans do not cost $119, more like $159 https://levis.com.au/collections/women-501-jeans
I paid $6.29 for a takeaway cappuccino last Sunday, not $5.10. At my local franchise bakery, the fresh bread loaf is $4.90 not $4.10 https://www.bakersdelight.com.au/products/white-block-loaf/?localstore=270182 . You cross the road for Mrs Jones, and you can double that.
Take that cost of living website with a pinch of salt because it does NOT reflect the reality.
The year we moved here, I bought 9 umbrellas and 1 bikini. Some years, it rains A LOT. We had several Niña years, and those years, bloody hell, I missed home! There is plenty of sunshine in the French Riviera, Spain and Italy. Or Malta if you need an English speaking country.
Or the Bahamas, Hawaii, Belize, and you are still closer to Europe.
You mention flights are not an issue because DH is Australian. Do you mean, you are going to burn your passports the second you land and never leaving Sydney again? never going on a holiday? The GBR is nice, but Greek Islands are nice too, and you don't have to worry about stingers six months a year. Play around on Virgin airlines and see how much it costs to go for a weekend anywhere. Ryanair, Vueling, EasyJet, we don't have true low cost airlines.
Don't get me wrong, Australia is gorgeous, but if weather is your driver, there are plenty of options with great quality of life that come with a lower price tag.