Dyson AM09 Hot + Cool fan for $475 @ The Market with 50 off coupon
Combine it with shoprewards 3% cashback for a further $14.25 off = $460.25
(I have previously had success with cashback from shoprewards)
According to pricespy, cheapest it has ever been is $528 in December 2019
RRP $699 JBhifi
Note it does not actually cool despite being marketed as a cooling fan.