Randolph Engineering has got many of its past-season styles up for sale as well as a couple of staples like the always timeless P3 (bottom - $149). If you're not familiar with Randolph Engineering's frames, the independent company has been building sunglasses for both consumers and the military since the 70s. Each and every frame requires six weeks and 200 steps to complete, all of which are handcrafted at their factory in Randolph, Massachusetts. 

From $99, randolphusa.com