In order to study in Australia, it is a requirement for students to have OSHC. Due to deals respective governments have done amongst each other, the exceptions to this rule are students from Belgium; Norway; and Sweden.
Students from all other countries are required to have OSHC to fulfil the requirements of their student visa. So if you have to have it, you might as well try to get it for the best price possible. Get a quote and compare all OSHC providers on https://oshcaustralia.com.au in just 5 seconds!