Actually just had a thought, revise your listings and check as it is a little tricky when selecting worldwide postage, you will see 2 sections for postage, one to Australia, and one to worldwide once worldwide or a custom selection is done, now before you submit revisions, check under worldwide you will see a second one for worldwide again underneath yes is exactly the same as the one you just did, but you need to select the same thing again, dont ask me why you have to do worldwide twice but is the way Ebay in thier "wisdom" have made it these days, then your listings will show up on other Ebay sites.

Cheers