This robot vacuum empties itself and it's on sale for Black Friday

Save $200.99: iRobot's Roomba i3+ is on sale for $399, down from $599.99.

Usually when a robot vacuum has a bunch of cool features, the price tag reflects that and it's pricey. Luckily, on Black Friday something that is normally a little too expensive drops down into affordable territory.

That's the case with iRobot's Roomba i3+. Normally $599.99, the robot vacuum is on sale for $399. So, about those features: The Roomba i3+ connects to WiFi for app scheduling and voice controls, it has smart mapping, and it empties its own dust bin.