you cant get any cheaper than hitchiking. and then of course you'd have to pay for the boat
Location: Places >> Oceania >> Australia >> South Australia
cheapest way to go to Kangaroo island
Which is the cheapest way to go??how much??
Experienced kayakers can paddle over there for free.
Seriously though, unfortunately the route is monopolised by Sealink so the best you can do is look for specials on the ferry or hope someone in a car has a free spot - then you just need to pay as a passenger.
There used to be competition on the flight route but now there's only one airline flying over I think so that's no better either. :-(