The Vodafone plans leverage two different bonus data offers that the telco is running and each of them gives you 2GB bonus data, for a total of 4GB, on SIM only plans signed on a 12-month contract. via
All plans include infinite standard TXT, infinite standard national minutes and a monthly data allowance on a SIM only 12 month contract. Be careful as there are other plans with less data but include international minutes.
Red Data Plans:
$40 10GB
$50 13GB
$60 17GB
Make sure to read the Critical Information Summary (CIS).
Optus is also offering an online-only plan for $40 with 10GB, including unlimited streaming of Google Play Music, iHeartRadio, Pandora and Spotify.
I don't work for them, but just switched my plan to that today.