Hearing aids are expensive, because they are a medical device. And they are also only available to people with a hearing deficiency. By not being "hearing aids", these are available to a wider audience.
Syringes are a medical device: they're cheap and available to anyone.
Where are you and why aren't hearing aids available to buy for anyone who wants them? Is that a legislation thing, do hearing aids damage not-as-hearing-impaired people's hearing?
