Shipping to Australia is super expensive, hence why most things in Australia that aren't made domestically are expensive. Look it up on a map and see how far it is from everywhere
That second zenbook you linked looks good, it appears to have the ability to toggle between the 620m and the intel x4000 gpu so you can switch it when you wanna game and when you need the battery life. Also 4gb of ram should be fine unless you're doing something intense on the laptop at which point I would question why you are going the ultrabook route.
Also 128gb is decently sizable. If it's your only computer then I'd think about it, I have D3, SC2, Dota 2, CS:GO and CS6 and a handful of other programs and am about up to the 128gb. I don't have any music on it, so if you're gonna be stuck with 128gb think about what you're realistically gonna put on it. Also that full hd screen is downright sexy, I'd love to have a full 1080p res on an ultrabook!
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