How much should I sell my Jeans for?

Hello. I have a little problem. Im wanting to sell 16 pairs of Bullhead, Roxy, Fox, and Hurley Skinny Jeans, in a variety of colors and designs I bought at Pasific Sunwear about a year ago. They are all in Excelent condition, only wore once. And I have no idea how to sell them... eBay or Craigslist? and if I should sell them individually or in a lot? or how much to charge for them... Please help! Thanks...