Amazon has the Samsung POWERbot R7010 Robot Vacuum for $199.99 (regularly $399.99) again with Free Shipping for a limited time.

The Samsung POWERbot R7010 robotic vacuum handle the vacuuming for you. Powerful suction delivers optimal cleaning results. Maximize cleaning coverage as it navigates your home with ease and avoids obstacles. Edge Clean Master technology features an innovative shutter that extends out to capture debris trapped in corners and edges of the wall.