New plans with Coles mobile (Optus 4G) only released a few days ago.
Price wise and taking into consideration the data allowances, these seem better than the Aldi, Kogan, Amaysim and Vaya mobile plans currently on offer.
^ 28 DAYS EXPIRY
* International calls to China, Hong Kong, India, Japan, Malaysia, New Zealand, Singapore, South Korea, UK and USA .
Coverage: Coles Prepaid plans are available on the Optus 3G and 4G Plus networks. Coverage availability varies depending on your device and location. With 3G devices, you can access the Optus 3G (UMTS 2100MHz/900MHz) network. With 4G devices and a compatible plan, you can access the Optus 3G network plus some or all of the Optus 4G Plus network (LTE 700/1800/2100/2300/2600MHz).
Enjoy
Honestly, the 28 days expiry kills it for me. That essentially means I'll be paying for an extra month every year.