My mother has recently passed away. Her hearing aids are not fully paid for yet. I realize that the shape of her ear canal was unique to her, but perhaps there is a market for purchasing the technology inside the instruments. They were $4000 new. She was still paying them off when she passed.
I know that eyeglasses and hearing aids and other medical equipment is sometimes donated to various organizations but I'm not sure how you would go about selling them. I'm sure they would be priceless to someone who can't hear.
I'm sorry about the passing of your mom.
It must sting a lot that you're having to deal with this on top of losing your mother. My condolences on her passing.