Comment by NamTaf

Australia's system is similar, albeit the tuition fees are higher (capped depending on the degree and set by the government). You take out a government-backed loan and which is around CPI and then pay it back at an increasing % based on your income, between I think 1.5% above a certain threshold and 10% by a second, higher one.

There's been some issues with it, but no system is perfect and the thrust of it is aligned with the dual public-private structure that Australia seems to prefer (see also: medicare vs private health insurance).