A £10 Sweeping Robot ?! - Is it Any Good?

This Sweeping Robot cost me about £10. It’s got 1 star reviews on Amazon, but do they tell the whole story? Is it as bad as they make out? Let’s find out! The Greeiok Robotic Sweeper can be found here; (Use code Y7MAZ7ZN to get 80% off the listed price to get it for about a tenner)