Yes, Demetech does charge considerably more for their product, but their product is made in America, from American raw materials, and made by American workers who are considerably better paid than the Chinese workers.
https://www.miamiherald.com/news/business/article246582323.html ...And BTW, the Demetech masks are approved by the FDA and observed during manufacture of same, while the Chinese product gets no such oversight! ..But I guess we can always trust the CCP to be very quality oriented, just as they were with the paint on kid's toys and the poison in dog food.
Meanwhile, according to Barrons..Google, Amazon and Youtube refuse to advertise Demetech's masks. Oh, they give an excuse that they are trying to reserve the quality masks for hospitals etc. ..But the hospitals are buying the CCP masks.
I don't suppose their decision has anything to do with the billions of dollars they each make from the CCP....