The Australian license-holder Madman, has their release of the Armada series in two parts, with the first on December 4th (part two will be on January 15th). Each part will be AU$50.

The American license-holder Shout Factory is releasing a complete set (it has been 9 years since Rhino originally released their Armada DVDs), a lot cheaper than the Australian version, but you have to wait until March 11th.

It has a Retail price of US$45 for the full 52 episodes, or less if you pre-order from some places like Amazon, who currently have it for about AU$35 (that Kirben posted here).

So if you want to save about AU$65, you just have to wait 3 months for the American version.