As an alternative to having someone get merch for you from afar, I have the following info from the office:

Rob Manthey wrote:

Alene
Summary of key questions from the list:
...
5/ Can merch/tshirts be made available for sale over internet/powderworks, maybe after the dust clears (if surplus available)?

Midnight Oil wrote:

as always through Love Police - see links on website/myspace

It may be that some merch sells out or only appears at the show though ...

RM