hearing aids are expensive because dispensers do not make money except when they sell it. We should pay them for their testing, we should get the results and buy the units wherever we want.
The warrantees are made so the unit is at the end of its life cycle at the end of the warrantee. So another unit has to be purchased. They are like Detroit cars. Expensive repairs will happen when the warrantee runs out.
Then you have to buy a new one. I am on my 4th hearing aid unit and shopping for a new one.
All dispensers sing the same tune, do the same tests and hope you buy the unit they are "pushing". I think hearing aid companies provide offices or part of it to dispensers.