This article is from the Model Rockets FAQ, by Wolfram von Kiparski with numerous contributions by others.
To date, all model rocketry components are imported through
DAWN TRADING, who the distribute to the local retailers. Note
that because of their policies, it is not possible to buy
individual components for kits in Australia. The Designer's
Special component set is, however, available. Currently only
Estes and MRC kits are imported. Local retailers are most R/C
retailers and some gaming shops.