Theis a good bump-and-roll bot that is on sale at Amazon for just $139.99 ($110 off), which is one of its better prices to date. This basic robot vacuum may lack some of the advanced features of pricier models, but it nails the essentials with decent 2,000Pa suction power and a large 600ml dustbin. It operates quietly and doesn’t rely on Wi-Fi, too, so there’s no need to deal with a smartphone app. Instead, you can control it directly using the onboard button or the included remote, which also lets you set cleaning schedules for added convenience (and remotely steer it, in case it’s not getting the spots you want it to get).