I’m not sure, but I think that from this statement, you aren’t yet familiar with how shopping for hearing aids works.
Buying hearing aids is like buying a car. You go in and the place offers one line. Most audiologists have negotiated a contract and trained with 2 (possibly 3) brands. And that is all they offer. They may or may not offer every model offered by that brand. They work on commission, and sometimes have a better rate with one brand than another.
By going to Costco, you have a choice from 5, which is more than you will find elsewhere. They tend to be top brands on offer. Costco pays a working wage, their fitters are not on commission.
I went to an independent audiologist who offered 2 brands, and offered me a trial with one. She gave me the demos to try there in the office. As we chatted, I asked if she had any others. “Oh, I have another brand somewhere for people who don’t like this one, but I always start off with this one.” Um, not what I was looking for. I went to Costco.
Another reason to go to Costco is price. You won’t find the same hearing aids at that price, any other place.
Don’t forget to ask about adjustment visits. I believe they are still unlimited and included, at Costco. Some places offer 3, or 5 visits, and then charge you after that.
There are other differences, but those are the ones that come to me just now.