eBay has the Ray-Ban RB4165 Men's Justin Sunglasses (several colors) for $60 with free shipping. Features UVA and UVB protection.
Ends 11/21. Banana Republic is offering an Extra 40% Off Sitewide, Including Sale Items. Also get an additional 10% off. Both discounts appear in cart. Shipping adds $7, or get free shipping on orders of $50+.
Amazon has the ALKAI Griffin Sport Polarized Sunglasses (Black / Black or Gunmetal Gray for $9.99 with free shipping for Prime members or on $25+. Has excellent Amazon Reviews.