Mike,
The reigning premiers Down Under are my team, The Melbourne Storm. As you can see from my sig, very similar to Raven colours which you might dig.

I wouldn't order from Oz, my apparel i got from ebay from the UK, works out a lot cheaper even with P&P on top.
Give you an example, 2 years after the British Lions tour (they tour every 4 yrs) to New Zealand, Aussie stockists were still selling the jerseys at full price which was a whopping $160 AU. I went home for Xmas 2005 and picked it up for 20 quid.

They play rugby league in the UK too by the way, do a google for "Super League" and you should find some shirts there, but i think that ebay is probably your best bet. There used to be a british site called "kitbag" that was ok too. Try kitbag.com or kitbag.co.uk