Hi all- just thought i'd let you know that K-Mart at Broadway (Sydney) are still only charging $11 to PURCHASE a 330g sodastream gas bottle. I bought 2 there yesterday... If they try to charge more, just go back on a different day when someone's working there that doesn't know/care what's going on!
Hope this helps a few of you out there, but it may be a good idea if you're going to buy a bottle to limit it to only one or two, otherwise they may realise their mistake & nobody else will be able to buy them there for cheap in future!!!
Michael.