Shark Matrix 2-in-1 Robot Vacuum & Mop (refurbished) $80 + Free Shipping w/ Prime

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.