We all could use a little help keeping our homes clean, and now we live in an age where robots are actually capable of lending a (mechanical) hand. Robot vacuums are some of the most ubiquitous smart home gadgets available today with their circular shapes and propensity for bumping into walls. While they provide an undeniable convenience, they can also be expensive. It’s not unheard of to drop close to $1,000 on a high-end robo-vac.But in a change from just a few years ago, today there are now plenty of budget robot vacuum options to choose from. At Engadget, we consider anything under $300 to be cheap in this space and you may be surprised to see how many there are at that price point. And if you’re new to the world of robot vacuums, you may find that one of these budget gadgets does everything you expected and more.Are robot vacuums worth it?Friends and family often ask me if new gadgets are “worth it,” and when it comes to robot vacuums the answer is yes. The most important thing th