For the price of the masks purchased from Ravi's link I can keep my friends and family supplied with masks for the $100 I spent. I only intend on wearing a mask when necessary to go into crowded areas, I live in a small town and that wouldn't be too often. I intend of discarding a mask once used. This morning I saw on TV the prices some are charging for masks and it's a crime, kudos to EM3ev for what they're doing. As to whether or not these masks meet certain specs I really don't care they're at least one hundred times better than wrapping a scarf around your head as some are advocating.
Tom,pardon my ignorance but what are "buffs"?