Save $150 on the excellent Roborock S6 MaxV vacuum and mopping robot - CNET
Roborock S4 vacuum robot for $319.99 from Amazon
Amazon.com - roborock S6 Robot Vacuum, Robotic Vacuum Cleaner and Mop with Adaptive Routing,Multi-Floor Mapping, Selective Room Cleaning, Super Strong Suction, and Extra Long Battery Life, Works with Alexa(Black) -