Ecovacs Robotics via Amazon offers the Ecovacs Deebot M80 Pro Robotic Vacuum Cleaner with Mop and Water Tank for $169.99. Coupon code "TCEW3O4Y" drops it to $159.79. With free shipping, that's $10 under last week's mention and the lowest price we could find by $128. It features a 5-stage cleaning system with optional mopping and drying stages.