I got some from www.electricaldiscountedsupplies.com, brand new and not the £150 quoted by everyone else.
nope - deffo dont fit mate. Also, you will be looking at well over £120 quid for an RCBO. i have a job going at the min where i am going to have remove the QOE board simply cos i cant get the blanks for it! Sq D are good, but they take the mick a bit when they change their models, then have you eyes out for the older ones!
Reply to the thread, titled "Square D QOE style MCBs." which is posted in Australia on Electricians Forums.