Can you tell if this is a hearing aid or amplifier? Hearing aids are expensive costing around $800+. Hearing amplifiers look exactly like hearing aids... except they are often under $50 and you can purchase them in a store like Amazon . So beyond the dramatic difference in price, what exactly is the difference between the two, especially since both do appear to help people with hearing loss, hear better? After all, both increase the volume of sound transmitted to the ear and they lo…