Big W Winston Hills NSW has at least 10 google home speakers for 40% off bringing it down to $79. Seems to be cheapest for local new stock. Unsure if this is nationwide. Can't find product on big w website so it maybe a clearance item. Also don't forget woolies gift cards for extra savings.
Ebgames are also selling this for 95c more at $79.95. They do price match however might be difficult if not in Sydney.