Duduma Sunglasses via Amazon offers its Duduma Reflective Revo Color Sunglasses in nine lens colors (Black pictured) for $16.99. Coupon code "FN4QFHR2" drops it to $9.99. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.48.) That's $58 off list and the lowest total price we could find. They feature polycarbonate lenses with UV400 protection and include a pouch and cleaning cloth.