Does a box add value to a used set?

jback93 · 2014-03-06T21:25:41.000Z

I have purchased my first lot of sets from a Craigslist seller. He had several boxes that he had saved. My question is, how much value does a box add to a used set? Or is it even worth keeping them? These sets are not that sought after, so I'm not sure what to do. Thanks for the help JB