SAVE $200.99: As of Aug. 11, the Ecovacs Deebot X11S Pro Omni robot vacuum and mop is on sale at Amazon for $799 instead of its usual $999.99. As of Aug. 11, the Ecovacs Deebot X11s Pro Omni robot vacuum mop combo is on sale at Amazon for only $799. If you want a robot vacuum that will make your life a little easier and take both vacuuming and mopping off your hands, the Ecovacs Deebot X11s Pro Omni is a solid pick.