I just heard on the radio this morning that Opera Australia is offering this deal for students to celebrate the 150th performance of Madama Butterfly.
I can't see anything on their website about it, but they were saying on the radio that you can call and book, or purchase at the Box Office (Student ID necessary of course).
Personally, I'd rather pick my eyeballs out of my skull with a spoon, but I'm sure it would be to someone's taste.
so whats the number to call. no point providing website if there's no reference to it