Ever hear of Ampli-ear?

My 90 year old mother keeps losing her $3,000 digital hearing aides. Not only does she lose them, but she can’t understand the concept of cleaning or changing the batteries. I’m at my wits end. I recently saw an ad in our newspaper about Ampli-ear? Cheap at around $40…Anyone know anything about these devises? If she loses one, no big deal…but do they work very good?