Virtual Exchanges Inc. via Amazon offers Prime members the Electric Watts Women's Wayfarer Polarized Sunglasses in Gloss Black (pictured), Matte Black, or Tortoise Shell for $29.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $5.48.) That's the lowest total price we could find by $3. They feature 100% UV protection.