My echo dot is well worth the £30 or so we spent on it in a sale. A digital radio would have cost as much or more. For some people though, it could be genuinely life changing. My uncle passed away in November. He lived as a quadraplegic for 50ish years. We were waiting on a kickstarter product we missed to come to market which would have linked an echo with a device that could change the tv channel for him. For me and you, that's convenient. For him, it would have meant not having to call a carer in to change the channel when he was in bed. It would have given him complete control of his TV. The same way that dragon had for his PC. People like me, who spend disposable cash for convenience, open the way for these devices to genuinely change the lives of people with physical disabilities.