This Roomba robot vacuum is on sale for $150 for Prime Day

Robot vacuums are great items to look for during events like October Prime Day. They’re usually hundreds of dollars off, so you can save a ton if you’re buying one as a gift or you want to upgrade an aging robovac you have at home already. One of the best deals this time around is on the iRobot Roomba 104, which is 40 percent off and on sale for only $150.

This is a newer version of the unit that topped our list of the best budget robot vacuums. It’s an entry-level robovac that gets the job done. The…