Harvey Norman are currently (til 12 Jan) selling the Logitech G900 gaming mouse for $100 in store - previously never seen it below $180 here or internationally.
There is an image of the in-store ticket at this link that is repeated below - I showed the image to staff at Noel Leeming who after checking were willing (unhappily!) to price match down from $240.
They phoned Harvey Norman - indicating that as of this morning Harvey Norman had stock in at least the Mt Roskill and Mt Wellington stores.
Brief use agrees with the reviews - this mouse is stunning, especially if you are a left handed user as it is ambidextrous and customisable regarding button locations.