Probably the last hearing aid design that would be “needed” would be an In-The-Ear design, as the success of this design depends the physical dimensions of a person’s ear canal. You likely can choose a design of hearing aid that you like the looks of, however if an In-The-Ear design is not suitable for you, it is likely that a BTE, Mini-BTE, RIC or OE hearing aid would be.
I work for a company that sells hearing aids online for prices between $299-$499 per hearing aid. If you would like to email me a copy of your audiogram I would be happy to recommend hearing aids that are well suited to your hearing loss.
I also wrote an article last year that was originally aimed at helping children in their 50’s and 60’s purchase hearing aids online for their aging parents, however many customers trying to navigate the hearing aid marketplace have found the information in this article educational.