EyewearIsland via eBay offers the Mustang Men's Drift Aviator Sunglasses
in Black, Polarized Silver, or Polarized Bronze, model no. 0303, for $17.95
with free shipping
. That's $7 under the lowest total price we could find for similar sunglasses elsewhere. They feature 100% UVA/UVB protection, metal frames, case, and more.