I just did a quick search and Costco seems to be the only source. Do you know if that’s correct? (I searched by several different zip codes). Also looking at Costco regular page price is the same.
Here is the Press Release on the Phillips, from April.
Posts there suggest this is a new brand from Demant, and replaces the Bernaphone at Costco. Demant is the parent company of Oticon, Bernaphone, Sonic, and Phillips. https://www.demant.com/about/our-business
The Philips brand seems to be new, so that might be why you do not find much info on it.