Noticed it while I was shopping at Epping Costco (VIC), could be nation wide. Tag showed expires on 7th Nov 2021.
Online price in link is still their usual RRP.
Instructions booklet states requires a rpzd valve for full compliance but ymmv :)
price from invoice https://imgur.com/a/3S47HNh
Assembled size from description: L 50.9 x W 38.8 x H 13.4 cm
what size is it?