Roomba's premium S9 robot vacuum is $200 off at Wellbots

The holiday shopping season is a great time to find a robot vacuum at a good sale price, and one of iRobot's most advanced devices is $200 off right now. The Roomba S9 vacuum is down to $900, which is a record low for this model. The "plus" version comes with a Clean Base, but if you can do without that, the regular S9 vacuum is also discounted to $700. Since these remain expensive gadgets, you'll qualify for Wellbots' free shipping and the retailer also offers no sales tax outside New York. These robo-vacs do everything that the well-loved Roomba i7 series does, but they also have a few extra perks.