Why there is such a big cost difference in hearing aids from brand to brand?
Like any other product that you buy, there are quality and performance differences. The problem with hearing aids is that the buyer cannot tell by looking at a hearing instrument whether it is a good quality one or not. Some of the better companies actually spend their own resources to do scientific research to make hearing aids that address the complexities of hearing impairment in the real world. This increases the cost. Other companies use off the shelf technologies, or designs that are more ready made and cost less to produce. Choosing a quality hearing aid is something that your audiologist is trained to help you with.