Huge price drop on the iRobot Roomba Vac Robot Vacuum (Q011)! Get it now for only $139.99. That’s the lowest price on record. DUST IS NO MATCH FOR OUR 3-STAGE CLEANING SYSTEM. Your chore list just got shorter. The Roomba Vac Essential robot is a vacuum loaded with cleaning essentials and powered by iRobot OS. Its 3-Stage Cleaning System has three levels of powerful suction