Marketplace
20BF
The Sonos One SL is on sale for $249 at Noel Leeming and you can take a further $20 off when buying from The Market and using the discount code 20BF. Both black and white versions are available.
These speakers are getting older now and perhaps Sonos is looking to phase them out. I have four of them around the house and they do a nice job.
56 in black and 33 in white.