When a potted plant or wine glass accidentally gets knocked to the ground and shatters, we know how tempting it can be to whip out your vacuum and easily clean up the mess with one fell swoop.

Robot vacuums range in price from $50 to nearly $1,000, so some people think that you have to pay at least a few hundred dollars for a decent model. Good news: that’s not the case at all. If you don’t ...