Not quite as cheap as this one in August this year:
https://www.ozbargain.com.au/node/399236
UPDATE Thanks to users lw1987321 and tee cee who have reported a potential 10% off coupon that may appear on the Good Guys website and works at the checkout to bring the final price to $312.30 CC or + Delivery. At this stage there are mixed results from people generating the message.
UPDATE 2
eBay price has now been updated bringing it down to: $329.65 with 5% off
https://www.ebay.com.au/itm/NEW-Dyson-248407-01-V7-Cord-free…
Getting a bit messy to keep this post updated with the cheapest price. If someone else wants to post the eBay deal specifically, feel free?
But it’s $599?