The first step is getting your hearing tested, and make sure to get a copy of the results. It's called an audiogram.
Hearing aids are no different than any other complex tool, prices are all over the place. I know this because I get paid to research retail pricing for HA's every month.
There are three ways to buy the same exact name brand hearing aids:
1. Go to your local hearing aid provided and get fitted - This is the most expensive and usually ends up giving the customer the least choice of hearing aid brands and models, but the most personal service. Hearing aid cost and future service are bundled together so you pay for some amount of built in service, whether you use it or not.
2. Internet purchase. Least expensive but it's self serve. The hearing aids are set to your audiogram and sent to you. (The reason to get a copy of your audiogram) For adjustments the HA's need to sent back to the provider*.
3. A hybrid of buying HA's on the internet but picking them up from a "network provider". The cost for this method is somewhere between the two above. Usually customers get one or two face-to-face appointments for adjustments after the initial fitting. If you live in, or near, a big city finding a network provider is not a problem, otherwise you might have to travel.
*Hearing aid news:
Hearing aid tele care is here. With top of the line hearing aids it's possible to buy them online and then have follow up appointments done by telephone. As part of my job I will be trying out two pairs of these BlueTooth enabled hearing aids in the next couple of months. Using my iPhone as a remote control and audio streaming device for TV. In addition, the outfit that sends me the HAs will be testing the tele care capabilities of an extensive software update by HA manufactures. If anyone would like more HA info PM me. I do not sell or service hearing aids and offer industry insights in the hope it will help my fellow hearing impaired outdoorsmen.