Amazon has the Duduma Unisex Polarized Sports Sunglasses (Multiple color options) for $22 - $8 off with coupon LX3MYDVS(Ends 8/31) = $14 with free shipping on $25+ or with Prime. List price: $44. Feature 100% UVA and UVB protection, shatterproof lenses, and a super-light frame.
Has good Amazon Reviews.
eBay has the Ray-Ban Caravan Men's Aviator Sunglasses (gold/blue flash lenses) for $62 with free shipping. Retail price: $175. Features metal frame, synthetic lens, non-polarized, 100% UV400 protection coating.
Has excellent Amazon Reviews.