Tanga.com has 2-Pack Aviator Sunglasses (Silver Metal Frame) on sale $5.99. Shipping is free. Thanks Eko_Bang
Note, your two pack will be added to cart when you select "Add to Cart"
Editor's Notes & Price Research
Features a silver metal frame/lens w/ UV400 protection. Each frame is measured about 130mm by 51mm - Discombobulated