Use the left side drop down menu to plug in your destination.
The left side of the calculator will show all the Incoming Call Rates and Data Rates.
The right side will auto populate with the Outgoing Rates back to the US/Canada and locally within the Country selected.

Use the top drop down menu to plug in your destination.
The top of the calculator will show all the Incoming Call Rates and Data Rates.
The bottom will auto populate with the Outgoing Rates back to the US/Canada and locally within the Country selected.

Incoming calls while in:

To your UK# : $ 0.10 / min.
3G Data Service : $ 0.10 / MB

Outgoing from Australia to:

$ 0.30/min.

Calling to Australia : $ 0.30 / min
SMS to United States : $ 0.30 / per text

Per-minute, Data or Text rates are billed against your $29 credit purchases.
Billing increments: 60 seconds. Rates subject to change.
SMS is supported differently by many GSM networks/carriers worldwide. Cellular Abroad can not guarantee text messaging in every country.