There is a convenient free shuttle bus service during the ski season, and over snow transfers available during unloading of your car at a small cost, this service is mainly during change-over periods on Friday nights and Sunday change over period.
Designated car parking areas during the Ski Season for long term parking are easily accessed by free shuttle bus. Easy to get to by bus from Melbourne, or self drive.
Consider staying over Easter holiday period, or during the Summer for a high country experience that won't break the bank.