Right now on Woot (an Amazon owned company- totally legit) you can grab this iRobot Roomba 671 Robot Vacuum with Wi-Fi Connectivity and Scheduling for only $199.99. This is a great chance to try this out for under $200!
The Wi-Fi connected Roomba 671 robot vacuum uses a patented 3-Stage Cleaning System with Dual Multi-Surface Brushes, a specially designed Edge-Sweeping Brush, and vacuum suction to clean everything from small particles to large debris off your floor. Dirt Detect™ Technology recognizes concentrated areas of dirt and provides additional cleaning in those spots, and the iRobot HOME App lets you clean and schedule conveniently from anywhere, at any time. Now compatible on devices with Amazon Alexa and the Google Assistant.