Lets Go Internet have started supplying very cheap broadband access.
$25 for 40 gigabytes of quota when bundled with home phone ($30) (10peak/30offpeak)
$45 for 40 gigabytes of quota on Naked DSL (10peak/30offpeak)
NOTE: Their early contract termination terms seem a little harsh, so be careful if there is a chance you may have to break contract.
is this just for WA customers? having a peak around their site, don't see anything about WA customers.