Here in the UK there's a company called Music Magpie. You enter the barcode digits of the albums you're wanting to sell and they will quote you a price - folk CDs are actually worth more with them than mainstream releases. They send you a label and the delivery costs included so all you have to do then is get the goods to a location (sometimes a local store) and they collect from there and then in time send a cheque for the monies agreed. Saves all the bother of photos etc via eBay, none of the hassles of Craigslist ...so all you have to do now is see if there's a similar company operating in California!