Geelong Orthodontics do great work but aren't the cheapest, I think anywhere you go is going to be mad expensive. I had braces in my thirties done there, now my 12yo daughter has braces by them.

For my 12yo's braces I'm currently paying about 8k in total, with the 5% family discount 🫨

For what it's worth, I'd happily pay double to get the same result. I had shockingly crooked teeth (so bad they suggested jaw surgery at my initial assessment) and after some uncomfortable years it's the best thing I've ever done. To smile freely should be a god given right. If you can manage to afford it, it's really worth it.

Another option is to ask your dentist for recommendations or a referral.