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PCCG is probably the biggest and cheapest mechanical keyboard vendor in Australia, and AFAIK the only Ducky authorised reseller (at least according to Ducky web site).
There is also
http://www.mechkb.com/ who also stock Ducky, as well as some of the less common keyboards.
Although range out here still sucks compared to overseas. Sometimes you can find a rare used keyboard OS for cheaper than a new keyboard here.
Anyway, Ducky is good - I have three Duckys, one has had daily use for more than a year and still going strong.
Blues and greens are clicky, but you'll get bottoming out noise from all mechanical keyboards unless you use O-rings.
I have stronger fingers, and prefer MX blacks or greens, although a lot of people find blacks too stiff and prefer reds.
Backlighting is good if you need it - I tend to work and play in darker environments, and thus prefer either backlighting of keycaps with a good contrast between keycap and legend.