[danzvtil]

Mate, I used to go to Melbourne 3-4 times a year for work, I would buy a Mebourne pass each time which covers you for up to 30days on all Victorian tolls. It runs off number plate recognition so you don't need an etag reader in your car, and like the other guys say, you've got up to 3 days to apply after your first toll. I never had more than $25 debited off my card each time, and I spent plenty of time driving around.