There is a wide variety of hearing aid devices on the market, with varying degrees of quality. Obviously the best and most technologically advanced devices will cost more. You can expect to pay anywhere from $1,000-$5,000 for the best single hearing aid. But However, you might need two if you have loss in both ears. Insurance coverage is not guaranteed, making it a potentially costly investment. You can get lower-end devices for as low as $125 on Amazon, but beware the quality. However, cheap does not necessarily mean bad in all cases. Do your research and ask around, and see if, and what, your medical insurance will cover.