The problem I have found when shopping around is that it is very difficult to find an Oz supplier who stocks what I want, and those that do have prices that are way too high.
As an example:
The three steppers I bought from Keling in the USA, when you take postage into account, cost me around AU$66 each (3 x US$39 + US$40 postage), the roughly equivalent motor from Ocean Controls costs AU$97.90 (GST inc) and then you have to pay postage on top of that!
Whilst I am as keen as the next man to support Australian enterprise, it's no contest I'm afraid.
Cheers,
Dave.