Duduma Sunglasses via Amazon offers Prime members its Duduma Premium Mirrored Aviator Sunglasses in eight styles (Black/Smoke pictured) for $12.99. Coupon code "7DTRKJMQ" 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 $16 off list and the lowest total price we could find. They feature UV400 protection and are impact- and scratch-resistant.