Do some research, a DFEE 3F Commerce degree is how much, 16k a year x 3 years = 48k
Now go look up what Commerce is, under the contribution band thing, then use simple maths to figure out your %
It varies greatly. I'm pretty sure commerce and law are among the cheapest to teach (the same as arts), yet they cost a lot more than an arts degree. On the other hand, science and nursing, etc. are very expensive to teach, but the student contributions are in the lowest bands