Ask for the MX Keys to be price matched to $179 at Harvey Norman and then checkout with Latitude Pay to get $50 off total. I did it online but you should be able to do it in store as well
Update: use Amazon AU for the price match $175 delivered @ Amazon AU
Amazing price. Just got mine last week and am loving it. I've got two different laptops connected to a single monitor and have a keyboard shortcut set up to switch inputs. Then the keyboard and MX Master 3 can switch at a touch of a button to. If you have the ability to install Logitech Options on two PCs then you can also seamlessly drag the MX Master 3 cursor to the edge of the screen and on to the other and it will switch both the mouse and keyboard to the other PC.