Several things come to mind from the above comments.
The first is that there is typically no guarantee of getting an instructor G3 job at the end of the IR training time. A lot of schools look at an instructors course as a way of making money and keeping props turning.
The quality of the course can depend on both the flight school and the instructor running the course. Does the instructor have real flying experience? A good number of hours? Experience as an instructor? Has flown a good number of aircraft types? Has real XC experience? Has good real skills to pass on to his candidates? Is not just out of CPL and IR training himself?
A lot of schools will give the spin that the Government is giving you a 'loan that can be paid back later'. The reality is that the so called loan is with Taxpayers money., not Government money! Unless paid back pronto that loan is going to hang over your head like an axe over your neck. Try and get a house loan with a VET Fee help loan of $100K lurking in the background.
That money has to be paid back whether the candidate achieves his or her qualifications or not. There are a lot of wanna bee pilots and instructors out there with loans to repay that will never earn a buck by way of a spinning prop.
At present there are more CPL and IR pilots being trained than there are jobs available. It is true to say that go north and shake any tree and new CPL pilots will fall out of it.