Sell it over at AVForums mate, you'll need to sign up but its a decent community over there. Pretty strict rules to follow when it comes to selling (mainly keep all discussions in threads and you'll be fine) and its mostly all completed through either paypal, bank transfers or cold hard cash and pick up.
<a class="postlink" href="http://www.avforums.com/forums/home-cinema-hi-fi-classified-adverts/" onclick="window.open(this.href);return false;">http://www.avforums.com/forums/home-cin ... d-adverts/</a> - Theres the specific Home Cinema classifieds :)