I have an older model from 4 years ago still going strong running on a daily program. It was a game changer keeping the household clean.
Had to replace a couple of bits, easily sourced from Ali. Also took it apart and blew the dust out. Made it work like new.
Paid $700-$800 for it back then.
Couldn't resist getting a new improved (hopefully) model for under $250.
Part of the Black Friday sale…

CamelCamelCamel

OzB posts
https://www.ozbargain.com.au/product/roborock-q7b