iRobot Remembers That Robots Are Expensive, Gives Us a Break With More Affordable Roomba i3 - IEEE Spectrum
iRobot's new $599 i3 Plus Roomba comes with automatic emptying but no smart maps - The Verge
Amazon.com - iRobot Roomba E5 (5150) Robot Vacuum - Wi-Fi Connected, Works with Alexa, Ideal for Pet Hair, Carpets, Hard, Self-Charging Robotic Vacuum, Black -