Classy U via Rakuten offers the Ray-Ban Unisex Wayfarer Sunglasses, model no. RB2132, in Black/Transparent or Black Rubber for $69.99. Coupon code "RB2132" drops it to $64.99. With free shipping, that's the lowest total price we could find in any color by $14, although we saw them for $10 less in December. They feature 100% UV protection.
Of note, enter coupon code "SPRINGSPECIAL" to get 650 Rakuten Super Points. (They convert to a $6.50 Rakuten credit.)