As you probably know, Prisma hearing instruments are programmable digital signal processing hearing aids.
Price varies with style getting less expensive as the style gets bigger.
Be sure to understand what services come with the hearing aids. At our Center, for example, batteries for the life of the aids, quarterly cleaning, annual hearing exams and unlimited programming visits are standard. Since these are sophisticated hearing aids, I would recommend finding an experienced audiologist geographically convenient to you rather than internet surfing. The Hearing Center, Inc.