Shark robot vacuums are on sale for Prime Day and there are some good deals to be had. For instance, the AI Ultra is on sale for just $280. This is 50 percent off, as the regular price is $550. This model topped our list of the best robot vacuums,

Voted the best overall robot vacuum in our guide, the Shark PowerDetect 2-in-1 offers the best of everything. It intelligently mops and vacuums your floors for up to 30 days. Just set a schedule and the robot returns to its base to empty the dustbin, wash the mop, and refill the tank automatically.

As of July 1, this impressive device is $50 off and is now available for just $399.99. That's the lowest-ever price according to price tracker camelcamelcamel.