More details below, but if you click on the link below to go to the ABC Shop Online which provides a great example of the range of radios available, and the features of each, as well as giving a good idea of pricing related to functionality:

http://shop.abc.net.au/products?utf8=✓&keywords=Digital+radio

So what is Digital Radio in Australia?

Click on the link below to see a good explanation of digital radio in Australia (from the Community Broadcasting Association of Australia), and the arrangements put in place for Australia's community radio stations for the full-metro coverage stations in the capital cities of Adelaide, Brisbane, Melbourne, Perth and Sydney, which are nearing completion, in our case completed and implemented on 4 May, 2011.

http://www.cbaa.org.au/Info_For_Stations/Going-Digital-0