Woot offers iRobot Y051020 Roomba Combo 2 Robot Vacuum and Mop + AutoEmpty Dock, Black for $219.99 (orig. $499.99). Free shipping for Prime Members.

Product Description:
The iRobot Roomba Y051020 Combo 2 Essential Robot Auto Empty Vac & Mop is a time-saving addition to your modern household. This convenient cleaning tool automatically vacuums and mops your floors with its innovative cleaning system to leave your home looking its best. With intuitive software, the Roomba has the ability to navigate rooms, detect floor types and even empty itself. The iRobot Roomba Combo 2 does it all for you, so you can spend less time cleaning and more time enjoying your down time.

• Cleans up after you—and itself. Scratch two items off your chore list: For easy and quick floor cleaning, this robot vacuums, mops, and self-empties—simple as that.
• A complete clean with our 4-Stage Cleaning System: A powerful 4-Stage Cleaning System vacuums and mops in one pass with a special brush for edge cleaning so dust can't gather.
• Empties itself automatically: With the AutoEmpty™ dock, the robot self-empties into an enclosed bag that holds up to 60 days of dirt and debris.
• Navigates your home like a pro​: The smart navigation methodically cleans in neat rows, while sensors help it navigate around furniture and avoid falling down stairs.
• Ready to tackle dirt right out of the box: Straight out of the box, it's easy to use. It only takes a few minutes to set up your robot and start cleaning.
• Thoughtfully designed to simplify cleaning​: The iRobot Home App simplifies your life with features like Clean While I'm Away, suggested cleaning schedules, and a Clean Map® report so you always know where your Roomba Combo® 2 Essential robot cleaned, even if you weren't home to see it.
• Recharges and resumes the cleaning task: Cleans for up to 120 minutes on a single charge and when its battery is low, this smart robot automatically returns to its charging station to recharge and then resumes the cleaning task.
• A mop you can count on: Dirt and dust disappear thanks to our built-in mop with a micro pump controlling water flow and keeping the mopping pad uniformly moist during cleaning. The washable microfiber mop pad is reusable for up to 30 uses and with three options for mopping water levels, you get a customized cleaning for your floors.
• Customized cleaning: With 4 levels of suction power plus 3 different water level options for mopping, you get customized cleaning for your floors.
• For proper setup & operation: The Roomba Combo® 2 Essential robot requires a 2.4 GHz network for setup and operation. After setup, keep your robot on 2.4GHz for operation; your phone can return to 5GHz.