Thanks @Skynet, that looks very cool. I could see using this with my washer and dryer, assuming the hub could detect the power usage drop indicating that a load had finished, to remind me to get it out. The price for Australia is quite good, working out at $50 per socket. I have added it to the list.
Edit: Just realised the Z wave block is an additional $21, but still $60 per outlet still is quite good for here.
Edit 2: Just saw the link for the non-USB version which is brings the price to under $100 with the Zwave block included. Can't see how I would need USB charging in the Laundry, so this is a better option for those situations.