Mobile Virtual Network Operators are nothing new in Australia, but the newest one certainly seems to be offering a good deal. Amaysim (it's supposed to be pronounced like "amazing", apparently) has just launched in Australia, and promises contract-free connectivity with all national calls costing 15 cents per minute with no flagfall and SMS messages costing just 12 cents.
The lack of flagfall charges is especially appealing, as is the flat rate of 15 cents per minute to any Australian number on any network. You can also opt for both prepaid and postpaid payment options. The catch is that Amaysim are using Optus' 3G network, which some would argue is already rather crowded and not helped by MVNO arrangements with companies like Virgin Mobile.
Still, data charged at 5 cents per MB, and available to purchase a 1GB data bolt on to prepaid for $10, the rates are really good. Also welcome is the promise that the company has a locally based customer service centre.
You can get the Amaysim starter SIM card pack for $2 at 7/11 stores, Woolworths, Harvey Norman and Caltex service stations. It sounds like a pretty good deal pricing wise - the question will be whether Optus is up to speed to handle another MVNO using their network.