Am looking to buy, possibly, a couple of these masks for myself and wife when we get out and snowmachine. Does anyone have any ideas where I can purchase these? I've heard good things about them, but am sure there are pro's and con's as well. Don't want to go thru the expense of defogger's. Any pro's/con's on this product type? What do they usually sell for? I've checked ebay with no luck as well. I appreciate anyone's comments. Thankyou and have a great ride this year..!