Plumbers or electricians get paid over $100k per year, I think even chippies are starting to pull that kind of coin.
When choosing a career, DO NOT base it on your ATAR or academics, I cannot stress this enough. You need to analyse what your strengths are, what you enjoy and what style of work you like. Most importantly, you need to consider the kind of lifestyle you would like to lead. That will dictate the kind of career you will enjoy. Do you like a fast pace environment? Are you more of a strategic thinker? Do you want work/life balance? Are you good at building relationships with people? Questions like these will help you pick the right career path. Attitudes like "I like English and writing and I have a 97 ATAR so Ill be a lawyer" are a recipe for career regret.
Another key piece of advice is do not go to uni unless you have a clear plan and intend on pursuing a career where a degree is required. For example, if you want to be a Doctor, you need a Medical Degree, if you want to be an Engineer, you need an engineering degree etc. If you just want to work in business etc, do not go to university. If you arent sure what you want to do but want to do a degree just to "figure things out" do not go to university. You are far better off going to TAFE or looking for an entry level job. Degrees are now extremely expensive ($50k+) and a HECS debt can have a significant impact on your financial future as they can hurt your chances of getting a mortgage. I see too many people poorly advised by well-meaning parents who assume Education/Uni = $$$$. This might have been the case up until the mid-2000s, however it simply isn't the case any more.
The goal of your 20s should be to get your career and financial wellbeing on track to set you up for your long term future. Making poor decisions like doing a $50k 4 year degree to get into a profession where a $4k, 6 month TAFE course would do the same doesnt bode well for your future.