There are a lot of good gear websites, but the shipping to OZ is something I can't help you with...but try these.....some prices are better than others...........some have better product availability....
western athletic supply at wasupply.com and baseballexpress.com
I have bought a lot of my sons gear from baseball express, they havent always been the lowest provider, but they have usually had the products in stock and deliver very quickly.....My son rarely gives me much time between notification of need and the actual date of need......like this spring when he informed me he needed a first basemans mitt, 2 days before the bus pulled out for Florida.....
Best of luck......