If the VET system is anything like the UK student loans system then a student would be stupid to spend a penny of their savings or other offered family money in paying off the debt. There are many reasons why you might never pay off the student loan so best to leave it until your wages are high enough to start paying it off automatically. Meanwhile the savings and family money goes on finding somewhere to live after the course, putting a deposit down and investing in whatever you need for your job.
You might never need to pay it back so why start?
Dave