Very cheap. I've posted before about my VOIP phone service which gives me unlimited calls in North America and Western Europe for $21.95 a month and three cents a minute to Australia.
Well Lingo has just added New Zealand, Singapore, South Korea and yes, Australia to the list of countries covered by the free unlimited calls! That's right, I can call my family on the other side of the world every single day and it doesn't cost a single cent extra (but Mum, that doesn't mean that I'm actually going to call you every day, OK?)
As well as my Lingo service which has an adapter which allows me to plug in a normal phone handset, I also use Skype on my laptop which has the advantage that I can take it with me on the road. For $4 a month Skype also provides me with a virtual phone number in Canberra, Australia which allows my client and colleagues there to call a local number to contact me wherever in the world I am.
To give you an idea how clueless the traditional telcos are, Qwest (the incumbent carrier in Colorado) is now offering a VOIP service in an attempt to compete with the likes of Lingo before they completely lose all their business. Not only is the monthly rate higher, but for that you pay five cents a minute for calls within the US and nine cents a minute to Australia. Doesn't really compete with free does it?