I've been told if you go do it in the USA you will have to re-sit the CPL exams as of start of financial year 2012/2013 from CASA - It's been big discussion about it for a while.
Whilst it is Cheaper (kind of/hardly if you include accomo, flights etc) you won't be able to come back and have employment in Aus without doing the extra CPL subjects and another flight test..
That is the rumour mill though.. so if you're willing to risk it.. go ahead
