I have a big long list of stuff from back when I ran my record label that I want to get rid of. Most of it doesn't have a barcode so I cant sell it to music magpie or anything like that.
I'm only looking really to cover postage on it though getting a bit of cash back on it would be nice
www.discogs.com, no need for barcodes, free listings and they stay up until the record is sold. You can also list for what you want, so you can undercut people asking for silly prices.