That's just for tuition...the extras are another 5k or more (uniforms, books, pcs/iPads, camps, instrument and lessons. The extras really add up.
For Luther and Oxley the books and class materials and some camps are included in tuition fees. But yes, music lessons and uniforms are extra and I think some VCE units like outdoor education are extra too.
I thought YVG was still the most exxy of them all.