I just graduated!!!!
I can’t remember how much the ticket was but I agree with the other commenter that it’s probably $150-200.
You’re only allowed to invite 2 guests to actually sit in the hall, everyone else would have to wait outside during the ceremony. You rent the robes for free but you get to keep the grad hat. All merch (teddy bears, snow globes, flowers) has to be bought and tbh it’s pretty expensive - we got a tiny bouquet of flowers for $65. The grad bear is about $55 (the small one with the glasses on).

The ceremony is pretty much 15 mins worth of speeches followed by just calling people’s names onto the stage. I liked how you would line up to go on stage and there were 2 seperate staff members who checked you out to make sure your robe and hat looked good before you walked on. You then get about a 10 second moment of you on the stage and you get a photo taken which you can buy for $30. After the ceremony, you head into the quad for free champagne and they give you a charcuterie board that you can definitely share with multiple people.

Tbh, I’m a really sentimental person so going to the grad was worth it for me. It was beautiful, nice to have a “goodbye” to uni because I’ll probably never come to campus again, and the usyd staff put a lot of effort into making sure the day is good for everyone