Ends 11/14. Nike is offering an Up To 50% Off Select Shoes, Apparel, And Accessories as part of their Flash Sale. Shipping is free for Nike+ members (free to join).
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.