Prime Day is a great time to buy a Dyson — although the newest Gen5Detect is still expensive, older models like the V8 and V11 are just as reliable and often go on sale for 30 percent off or more. This cordless pet vacuum is one of our favorites overall, and it’s now on sale for a fraction of the price of a Dyson.

Amazon Prime Day typically brings great discounts on all sorts of electronics, but it’s a good idea to go for the expensive gear first. We consider robot vacuums to be in that category because, while there are solid affordable models available today,

The SharkPowerDetect Clean & Empty is a powerful cordless vacuum with useful automation features and an effort-saving auto-empty dock. It's now at its lowest ever price ahead of Prime Day, with $170 off. There's also a discount on the vacuum on its own if you don't need the dock.