This deal has ended.
The iRobot Roomba Discovery vacuum cleaning robot is just $139.99 at Buy.com. The Roomba machine vacuums your entire house on command, calculating the optimal cleaning path, and when finished, it returns itself to its charger. The Discovery model is even more advanced with dirt detection: when it "discovers" dirtier areas its cleaning intensity increases. Shipping is free, there's no sales tax (except CA, MA, MD, TN), and new Google Checkout users can get a $10 discount for signing up.