University Gardeners

The many gardeners at my university probably don't need to fear for their jobs unlike some of the lectures. Because even though Curtin managed to have a A$80 Million surplus last year some departements are still running on debt and lectures have to leave, partially also because of decreasing student numbers.
International students, and I think about 50% of all the students are non-Australians, have to pay a horrendous amount of tuition fees each semester. For instance an international PhD student has to pay around A$23 000 per year and I just can't see why! PhD students don't visit lectures, if they are lucky they maybe get one hour per week exclusive supervision, all they need is a desk and a computer. This does never sum up to A$23 000!
But hang on... yes that's right... the gardeners... last week 3 gardeners worked half a day on this bit of something / dirt / lawn in front of my office...