Through 4/5, get this iRobot Roomba 650 Vacuum, originally $539.99 and on sale for $374.99, for $323.99in your cart at checkout at Macys.com when you enter coupon code 48HOUR. Shipping is free on this item. We couldn't find this model from a reputable site anywhere else for less than $325. It It has an automatic dirt sensor and self-adjusts with floor type. There is a limited six month warranty on the battery and a one year warranty on the machine with your purchase. Sales tax is charged in most states.