Not all cheap robot vacuums are dinky. Here are the most reliable ones under $300.

Robot vacuums can get pretty pricey, with some of the more beastly options running near (or over) the $1,000 mark. But the normalization of automated appliances at home is also pushing tech advancements toward the low-budget end of the spectrum, too. If you can find a bang for your buck, a robot vacuum is just as practical of a...