According to a booklet I picked up during a career's expo it's only paid once a year and varies depending on where you're staying. It's annoying that they don't bother to include that you pay it annually on the website...
I'll be starting, I'm unsure of the course though. My first preference on UAC is Double Law but considering my ATAR is only 94.7 I am unsure of whether I will get that. If not I'll be studying International Security. I ended up putting B&G hall down as my preference for accommodation though...