I wish I could afford to live alone! I'll see how I go... May need to take (unwated!!) gap year.
Don't be fooled, "student accommodation" is notorious for being stupidly overpriced. I'm currently by myself in a studio apartment on the corner of queensberry and lygon street, rent's $195per week not including bills. Comparatively, a three bedroom flat at the unilodge next to mc costs about $650. Most of the cheaper options at unilodge are twinshares. That means you're sharing a room not a flat, and you'll still be looking at around 200p/w. (This does include some bills though). With student accommodation you'll usually also be sharing facilities with the entire floor.
Another bit of insight, the flat i was staying at last year cost 400p/w and could very comfortably fit two people. It had a large bedroom, a study (that most owners convert into a second bedroom) and a large living area + balcony. The building was 1 year old when i moved in. A new student accommodation building (urbannest) is opening literally next door this year and a twinshare studio will cost $265per person/$530 for the flat.
For $250, you can easily rent out a nice 1 person studio apartment on barry street which is right next to it.
So don't worry, there are HEAPS of accommodation options available to you, and you shouldn't need to take a gap year to save up before you move out. The key is to start looking early. If you're confident you'll be at parkville, start trolling through domain.com/realestate.com once you're done with year 12 exams. That'll be when accommodation will be the cheapest. The same studio that I'm in is about $230p/w now. Stay away from gumtree/craigslist if you can help it. A lot of the time stuff there is fine, but the last place i was at was from gumtree and it was an absolute nightmare.