If you sell here and get crickets, you must go to ebay, which means doing it twice.
But if you start at ebay you generally can finish most of it up at ebay too, which means doing it once. Once you've 'cracked' the board selling with a good rep, and quality stuff, at a good to decent price (i.e. a good bit below (-25%) to slightly above (say 10%) market, depending on the stuff), then you can sell on the boards with minimal duplication of effort
Those who 'cracked' it are too many to mention, but I'm referring to sellers like October, Dale Roberts, etc.