Pay not that bad
The pay isn't that far out off private sector remuneration for entry level positions.
The biggest issue for anyone thinking to take up these jobs would be having to move to, and then live in, Canberra. The pay rate doesn't come close to compensating for that.
A great role for someone fresh out of Uni with no roots who can move to The Bush Capital for a few years. Not so good for a person with experience in the industry and an established family in another capital.