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If you make a purchase by clicking one of our links, we may earn a small share of the revenue. However, our picks and opinions are independent from USA TODAY's newsroom and any business incentives. So you want a Roomba. But a good Roomba will run you upwards of $400, and maybe you're trying to stick to a budget right now or you're saving up for a bigger purchase than a robot vacuum. That doesn't mean you can't still enjoy this futuristic technology!