Well, I must tell you that Wiley X is an American brand which is dedicated to producing quality goods of a wide range,especially outdoor instruments.. Of course now they begin to make sunglasses. Since their products are quite expensive when compared with other manufacturers, you can only find cheaper ones over the Internet, especially Ebay, Amazon, Best Buy, etc. Hope you find what you seek on those websites.
If you want to buy the wiley x sunglasses with affordable prices, you could go to the online stores to have a look. The price there is relatively cheap. You could go to the http://www.safetyglassesusa.com/wiley-x.html where has a lot of wiley x sunglasses with different colors, different designs and different materials.