Zappos

We just realized the other day that Zappos carries eyewear. This has been a great source in the past for footwear, especially because of their free overnight shipping and returns, but now they're a great place to look for sunglasses too. Here's the link to their eyewear page: http://www.zappos.com/eyewear.htm?ref=shopfor

We found a nice pair of this past summer's Marc by Marc Jacobs sunglasses, so its definitely a decent source.

Eye Candy Store

While looking around for vintage shops in New York City, we found Eye Candy Store" which has a few pairs of pretty cool vintage sunglasses. It seems like that they typically stock are frames like these, "Playboy Sunglasses." They have pretty decent prices too.