Matt Tate from stuff.tv said that Robot vacuum cleaners are one of those gadget families that will never stop feeling futuristic, and iRobot has for a while now made some of the best of them.
Starting at £699, the Roomba i3+ certainly costs more than your average Henry, but it boasts some of the premium features previously only available in the more expensive Roomba i7+ and S9+ models, including the Clean Base Automatic Dirt Disposal.

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