Walmart offers Roomba by iRobot 680 Robot Vacuum with Manufacturer's Warranty for $199 (orig. $299.99) with free shipping.

Product Description:

The Roomba® 680 Robot Vacuum provides a thorough clean, all at the push of a button. The Roomba's patented 3-Stage Cleaning System is specially engineered to loosen, lift, and suction everything from small particles to large debris from carpets and hard floors. Dirt Detect™ sensors alert the Roomba robot vacuum to clean more thoroughly on concentrated areas of dirt. Preset Roomba to clean when it’s convenient for you, so you can keep up with everyday mess. The Roomba robotic vacuum is the new must have appliance of the century!