Where Could One Find...?

...a cheap pair of glacier glasses? They look like round welding goggles that cover both eyes separately and have a wire frame with leather flaps covering the side opening of the lenses. I suppose it would be easier to say that they are the same kind of glasses that Jamie Hyneman from Mythbusters wears. I have looked on eBay and numerous other sites to find them extremely overpriced. Can anyone offer any help?