If you are still wanting a Google Home Mini then Harvey Norman have them for $35 at the moment. Not the cheapest ever but cheaper then JB and officeworks ($39) at the moment. You can try to get Officeworks to match it and beat it.
Plus for a extra $10 you can get a smart light bulb with it when added to cart:
https://www.harveynorman.com.au/connect-smart-10w-b22-white-…
https://www.harveynorman.com.au/connect-smart-10w-e27-white-…
Charcoal: https://www.harveynorman.com.au/google-home-mini-charcoal.ht…
Mod Note: Price has increased by $1.
Im assuming this is the Gen 1 right?