Woot! has Shark Matrix 2-in-1 Robot Vacuum & Mop (refurbished, RV2400WD) on sale for $79.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Features:

• Set a cleaning schedule, initiate whole home cleanings, or create no-go zones with sound of your voice using Amazon Alexa or Google Assistant.
• With powerful suction, Sonic Mopping, and Sharks self cleaning brushroll, the robot picks up pet hair and eliminates stuck on pet messes with ease.
• 360 LiDAR vision quickly and accurately maps your home so your robot can methodically clean detecting and avoiding objects in its path, day or night, adapting to everyday changes in the home.