Myer is having one day sale on Wednesday, 30 Nov 2011. Should be Australia wide. Amongst other things they are having 25% off Casio watches.
Disclaimer: I have no affiliation with Myer. This is just intended to be a heads up for those looking for some discount on Myer prices which are always full RRP anyway. Purchasing through other sources is cheaper but then there's something called instant gratification :)