Engadget readers get $200 off Roomba's i7+ vacuum at Wellbots

Roomba’s i7 series has some of the most advanced robo-vacs you can get, but they come at high prices. But for Black Friday, Engadget readers can save $200 on both of the robot vacuums in the line. The Roomba i7+ drops to $599 and the Roomba i7 falls...