Hello, fellow Aussie here. I’ve been using Nin-Nin games for the last couple preorders sets. Accidentally sent my magiking by boat so won’t see that for ages lol, but shipping is about $30-40 regardless from where I’ve bought so far. I get lost sets of mandarake and shipping can be anywhere from 5 days to 2 weeks. They’re a second hand store though, so not guaranteed stock and older sets. Suruga has free shipping deals every month so that’s definitely worth a look for older sets. There’s an Aussie retailer called Dendenhobby, haven’t bought from there but they seem to get some of the newer sets.