Nordstrom Rack takes up to 89% off a selection of men's and women's designer sunglasses. (Prices are as marked.) Shipping adds $7.95, although orders of $100 or more receive free shipping. A couple of best bets:

Ray-Ban Men's Wayfarer 54mm Propionate Frame Sunglasses for $59.97 (low by $36)

Saint Laurent Women's 48mm Round Studded Sunglasses for $119.97 ($400 off)