There are plenty of cheap robot vacuums out there, but few that are actually good. One exception is the iLife V3s Pro, which beats robotic vacuums four times its price. On Prime Day, the iLife V3s Pro is only $118.

If you are looking for a robot vacuum cleaner that is not luxurious but cleans well, this is the model for you.

In lab tests of the iLife V3s Pro, it sucked up 99.5 percent of pet hair and earned an overall score of 97 percent for cleaning hair, cheerios, and sand on both hardwoods and carpets. It also performed well in real-world tests, as noted in the iLife V3s Pro review.

Now, cheap robot vacuums have some tradeoffs: the V3s Pro cleans in a random pattern, which makes it take longer to vacuum than a smart robot vacuum that moves in a grid pattern. Also, while the V3s Pro comes with a remote control, it cannot be connected to Wi-Fi or controlled by a smartphone app. However, it can be programmed to run the vacuum cleaner in your absence.

Normally, the V3s Pro is priced at about $159, which is already quite a bargain, but on this Prime Day, the price has been reduced to $118, making it even more affordable.