Mass Effect 2 is $19.99 USD on Steam, I'm in Canada and we get the exact same Steam store people in the USA get. I bought it on sale and pre-order on GamersGate though. However since you're in Australia then yeah, you guys are almost always ripped off by prices anyways. And Steam is inexcusably bad at converting the $s to Euros or £s. Steam prices for new games (In North America) are on par with retailers but I don't think I've ever bought a game for full price on Steam, always on sale/discount or marked down if its a few years old. In the UK I've heard that its completely worthwhile to check Amazon, Play and other retailer's websites for new game prices as they are often cheaper. I haven't seen an example of than here in North America though.