If you've never had a robot vacuum and don't want to blow a ton of money on one before you even know if you like it, this budget Roomba vac is only $139.99 ahead of Prime Big Deal Days ($110 in savings).

The name Roomba has become synonymous with robot vacuums, and with good reason – this brand really knows what it's doing when it comes to these little home helpers. For Amazon Prime Day, iRobot has rolled out major discounts across most of its fleet of robovacs.

It vacuums so well that I have not gotten out my big Dyson once since I purchased it,” says one reviewer. “I can't tell you how much time I have saved.”