I feel schools are really taking advantage of graduands

Why will school charge 5k to 7k just to hire the gown that they will use for only 2 weeks and you need to return back

Lets say 1000 student are graduating that is around 7000000 that is 7 million

I feel that is a big scam to us student And you find out even school cant buy even water for these student.Do you guys think this is right