Hey Nicolai,
Blurbridge is running a student special until the end of Nov of $60 for a student and their car and $55 for any additional students. This doesn't run on Labour weekend but if you were kinda flexible and could leave slightly before you'd save a heap.
In terms of transport around South, not sure if they run in the area, but K-bus is pretty cheap and definatley worth the adventure of getting to experience their vehicles and drivers for any period of time :)
Hope it works out for you!
Kate