Hmm, I don't really see any benefit over my current solutions. I can wear cheap foam/silicone ear plugs and just set my alarm louder. Sometimes I just sleep with small rubber wired ear buds in (not the hard plastic ones) if I want to listen to audio while going to sleep. Never had any trouble with either method enough to pay this much. Props to these people if they can manage to market people into paying that much for not much different than current solutions, though.