Amazon has the Oakley Trillbe X Men’s Sunglasses (Matte White/Chrome Iridium) for $45 with free shipping. Retail price: $133. Features plastic, plastic frame, plastic lens, non-polarized iridium, 100% UV protection coating.
Superdry is offering Up To 50% Off Select Men's And Women's Apparel, Shoes, Accessories during their Winter Sale. Prices are as marked. Shipping is free on all orders.
eBay has the Nike Mojo Men's Sunglasses (matte pewter, EV0784 208) for $31 with free shipping. Has excellent Amazon Reviews.