Went to Bunnings Caringbah and saw this 75cm industrial smart DC wall fan for $20. Connects to Google and alexa. Located in the shelves near the split systems. Didn't get one was too big and couldn't wall mount it. Maybe 10 left. [ Caringbah Sold Out]
Also a 40cm table fan from $25 down to $5. Next to the collection of fans in the front bit.
can't find it on their website, must be a clearance item. I wonder if there are any at other Bunnings