@jay_man2, my conclusion is now that Costco needs a new webmaster. It’s true if you go to the page that you provided a link, here’s all you see:
Source: https://www.costco.com/hearing-aid-center.html8
However, if you follow the FAQ link on that page, here’s what you see:
Source: https://www.costco.com/hearing-aid-faqs.html7
And up along much of the left side of the page is a prominent prompt “Be sure to ask about our Kirkland Signature 10 hearing aids,” along with a prominent picture of them displayed.
BUT, if you employ the Costco search engine to search on Kirkland Signature Hearing Aids, nothing comes up. So that’s curious, too. (Kirkland Signature Sleep Aids comes up, though).
SEARCH:
RESULT:

Edit_Update: Searching on “Jabra Hearing Aids” or “Rexton Hearing Aids” brings up NOT ABLE TO FIND A MATCH, too. So, the Hearing Aid Center must be ~a separate entity and not indexed by the main warehouse search engine. And then there’s the famous Costco dichotomy between what’s in a store vs. what Costco offers via the web, which always irks me. You can’t really find out, IIRC, what’s in your local store without visiting it.