Prime Day is nearly as good of a time to buy a robot vacuum on sale as Black Friday. It's the first big sale event of the year for many 2025 robot vacuums that just came out in the spring after being announced at CES — most of them were far too fresh to go on sale for Amazon's Big Spring Sale in March.

Every year during Prime Day, we see waves of robot vacuum deals, bringing the often-lofty price tags down to a more manageable level. For example, right now you can save $500 on the Dreame X50 Ultra Complete, now $1,299 (was $1,799) at Amazon, while in the UK it's now £899 (was £1,199) at Amazon.

Right now my favorite hybrid Shark PowerDetect 2-in-1 Robot Vacuum and Mop is down to just $649 from $999 on Amazon. Meanwhile, the iRobot Roomba Plus 405 is now $399, down from $799. That’s an incredible 50% discount — saving you some serious cash.