Amazon has knocked a big $120 off the Dyson V8 Plus cordless vacuum, dropping it back to its all-time lowest sale price. Here's the limited-time deal to shop while you can.

The Shark AI Ultra Voice Control Robot Vacuum has tens of thousands of perfect ratings, with shoppers praising its self-emptying and mapping capabilities, as well as the fact that it works like a champ at dislodging pet hair from floors of all types.

Lightweight cordless vacuum cleaners have been around for a while, and they’ve only grown more capable with time. The Shark® Cordless PowerDetect™ Clean & Empty system is worth a serious look as a machine that combines powerful suction with practical features,

You can tell this self-emptying robot vacuum when and where you want it to clean — and Amazon has it marked down to $330, from $599, only if you shop now.