Bestbuy offers iRobot Roomba Combo i5+ Self-Emptying Robot Vacuum & Mop - Woven Neutral for $349.99 (orig. $549.99) with free shipping.

Product Description:
Whether your mess is wet or dry, the Roomba Combo i5+ robot vacuum and mop can double up on cleaning tasks with one machine. From spilled crackers to every day shoe prints—this robot can handle it. Set it to vacuum only or vacuum & mop your hard floors by swapping in the Roomba Combo Bin. 

• Double the clean with one machine.
  The Roomba Combo i5+ robot vacuum & mop is designed for both wet and dry floor cleaning—converting from an all-floor vacuum to a hard floor vacuum & mop, with the simple switch of a bin.
• Powerful performance. Powerful pickup.
  Pulls in the everyday dirt and debris with a 4-Stage Cleaning System, featuring unique Dual Multi-Surface Rubber Brushes that adjust to different floor types and avoid getting tangled with pet hair.
• Automatically empties its bin on its own for up to 60 days.
  Cleans up after itself, emptying its Vacuum Bin into an enclosed bag that holds up to 60 days of debris, which means two whole months of not thinking about vacuuming.​
• Simultaneously vacuum and mop hard floors.
  Don't waste extra time cleaning, the Roomba Combo i5+ robot vacuum & mop cleans wet or dry with one machine.​
• A mop pad designed for performance.
  Designed for wet floor mopping performance, the specialized microfiber pad tackles footprints, dirt and dust.
• Clean your eay more efficiently.
  Fill the Roomba Combo™ Bin’s tank with a compatible cleaning solution* of your choice or just water and instantly transform your robot into a vacuuming and wet mopping robot that leaves your home fresh and clean. *See iRobot website for list of compatible cleaning solutions
• Cleans the rooms you want when you want.
  Learns your home and creates an Imprint Smart Map so you can direct it to clean any room you want, any time you want—either on a set schedule or in the moment