What does it really matter who licensed it, who sells, and who makes it? It's a badarse filter, I could care less about the rest.
I would say it only matters in the respect that people want to try them but not everyone has a PepBoys near them where they can do so. People keep asking about other retail sources but unfortunately, due to the reason discussed here, they can't buy them anywhere else. I think some people anyway would like to know why they are only offered at PB.