SAVE $350: As of Aug. 27, the Shark Matrix Plus 2-in-1 robot vacuum is on sale for $349.99 at Amazon. That's a 50% saving on the list price.

As of Aug. 29, get the Roborock Saros 10 robot vacuum and mop for $1,299.99, down from its usual price of $1,599.99. That's ...