Groupon offers the Persol Unisex Black Frame Polarized Sunglasses for $87.99 with free shipping. That's tied with our mention from a week ago and the lowest price we could find by $80. They feature 51mm lenses.

They also offer the Persol Unisex Havana Frame Polarized Sunglasses for $87.99 with free shipping. That's also tied with our mention from a week ago and the lowest price we could find by $52. They feature 54mm lenses.