Why are iRobot's new Roombas so damn expensive?

Robot vacuum pioneer iRobot has big plans in the works. From new Roombas that clean themselves to smart vacuums that communicate with floor-mopping machines, and even robotic lawn mowers, iRobot has been busy. But while these sophisticated home care systems sound impressive, even useful, they suffer from one glaring downside. They are all staggeringly expensive. This move by iRobot is no accident.