The materials I use in my masks are simply the best quality 100% cotton that is available on the market. I add interfacing to increase the filtering ability of my masks and am able to say, because I have done the research, that it is pretty damn effective in it's filtering ability! See the study! The cost of the materials per mask is about $5. I've invested in some pretty expense equipment to stitch the mask together so it will hold up after multiple uses. Even though I have the best equipment available, the construction of each high quality mask takes 35-45 minutes! Really! One mask! I’m pretty skillful and it takes me at least that long to make a quality mask. Other items needed in the construction process include: irons, cutting tools, marking tools, and electricity and need to be added to the cost. Oh, I forgot one thing, sewing and sewing well is not done without knowledge, lots of knowledge! Sew what's the cost for all of that?
So how much sewing friends? I would say not less than $20/mask and that is still a bargain! If someone balks at that price, tell them they can always make one of those quick no sew mask like the Surgeon General suggested! Remind them how simple it is. Just cut up a t-shirt and add some elastic bands! Yup, let’s just see how long that lasts!