Came across this deal , was 139 a day or two ago and HN sells for 339. two colors available.
white: https://www.kogan.com/au/buy/evasmart-usb-personal-air-coole…
Black: https://www.kogan.com/au/buy/evasmart-usb-personal-air-condi…
Check and compare by yourself to see whether worth buying. Optionally check Kogan emails to see if there is any 10 off 100 and 20 off 100 offer to activate to take another 30 off when adding another cheap item to be over 100, further optionally pay the 70+ off with AMEX offer or discounted giftcard for further saving.
Save your money.