Just for today, click here to activate $100 off the iRobot Roomba 610 Vacuum Cleaning Robot at iRobot. This drops the price from $599.99 to $499.99 for the best price out there. Compare this to $560.93 at Amazon. This robot vacuum boasts the ability to clean four rooms with a single charge, and features a sweeper bin, two sensors to prevent drop off and detect dirtier areas to focus on. It comes complete with a self charging home base, an accessory kit, a rugged accessory case, and a two year manufacturer's warranty. Shipping is free with no tax (except CA, FL, IL, KY, MA, MD, MI, MO, NJ, NY, OH, PA, SC, VA, WA).