Robot vacuums can be great helpers around the home, but they're often quite expensive. Thankfully, Cyber Monday deals on these machines have come in clutch, knocking hundreds of dollars off the sticker prices of some of the most high-end machines we've tested. A version of one of our top picks, this Shark AI Ultra robot vacuum, is half off and down to 300. That's just about a record-low price, and this model comes with a self-emptying base so you rarely have to interact with it if you don't want to. As mentioned, the Shark AI Ultra is one of Engadget's favorite robovacs; in fact, it's the model our reviewer thinks most people should buy.

If you've been patiently waiting to buy a robot vacuum for your home, one of Engadget's favorites is on sale for Black Friday. Amazon has discounted the Shark AI Ultra by 50 percent to 300. With the price cut, the AI Ultra is only 5 more than it was for Prime Day in July. What's more, the model that's on sale comes with a docking station that can store up to 60 days, instead of 45 days, of dirt and debris. As mentioned, the Shark AI Ultra is one of Engadget's favorite robovacs; in fact, it's the model our reviewer thinks most people should buy.

The shopping event of the year isn't over just yet, and if you're looking for a robot vacuum to keep your home clean, one of Engadget's favorites is on sale for a stellar price this Cyber Monday. Right now, you can get the Shark AI Ultra for half off, or $300 less than its $600 MSRP. For those in the market for a robot vacuum that can clean their floors too, Shark also offers a version of the AI Ultra with mop functionality built-in. After a 43 percent discount, that variant is currently $400, down from $700. Either way, those are excellent prices for a pair of robot vacuums that offer a compelling mix of features and cleaning performance.