Earlier quoted context omitted.
The problem is the worlds 'state of the art'. You don't need a lot of space for dance halls and music studios for under 2000 students. People add sound insulation to existing rooms at relatively low cost and it's cheaper when your starting from scratch. So, in terms of education they really could have done the same thing for under 50 million, but why build a utilitarian box when you want to attract students.
I think they meant it's enough space for 1800 students simultaneously , which is actually quite a large number.
A building that has studio space for 1800 should be much cheaper, building costs should be on the order of $500/student/year to keep tuition reasonable.