Read about the band. Now you want some product?
If you live in Australia and there is a particular release by Hydroplane, the Cat's Miaow, Huon or Driving Past that you are after feel free to write to the band using the e-mail address on their web page.
If you live outside of Australia it's probably more cost effective, and time saving to obtain it elsewhere.

Recommended mail-order
In the USA Microindie mailorder
The UK Melody bar
and France Meridians Mail Order
OK this is only three. There are heaps out there but I know both of these places carry releases from most of the labels that have released records by the above bands or you could contact the labels.