iRobot's Roomba s9 vacuum with clean base is $200 off right now

If you're looking to treat yourself this holiday season, a robot vacuum could be the gift that keeps on giving. We saw a bunch go on sale for Black Friday, but now Wellbots is having a sale on one of Roomba's most advanced models. The Roomba s9 is $200 off right now when you use the code ENGADGET200 at checkout, so you'll end up paying $899 for the machine -- that's the best price we've seen it and even cheaper than it was last month during Black Friday and Cyber Monday. The s9 is even more advanced than the new Roomba j7 that came out recently, although it does not have Precision Vision Navigation like the latter. Instead, the S9 has the most suction power of any Roomba along with dual multi-surface brushes and Direct Detect technology, the latter of which helps the vacuum focus on the dirtiest spots in your home until they're fully clean.