Virtual Exchanges Inc. via Amazon offers Prime members the Timberland Women's Wayfarers Style Sunglasses in Tortoise, model no. TB7087, for $13.49 with free shipping. (Non-members can spend $49 to qualify for free shipping; otherwise, shipping costs $5.48.) That's $62 off list and the lowest total price we could find. They feature 55mm impact-resistant lenses.