Ends 5/20. Groupon has the Ray-Ban Unisex Tech Carbon Fiber Sunglasses (several colors) for $88 - 10% off with coupon SALE3 = $80 with free shipping. Features U.V. protection and 61mm polarized lenses.
Ends 1/24. 6PM is offering Up To 83% Off Men's And Women's Running Shoes And Apparel. Shipping is $3.95; get free shipping on $50+ or when you buy at least two items.
eBay has the Nike Mojo Men's Sunglasses (matte pewter, EV0784 208) for $31 with free shipping. Has excellent Amazon Reviews.