eBay is the widest marketplace, but you also get the most idiots amongst the real buyers. Also, in case of any dispute, eBay ALWAYS sides with the buyer.
You may be better off on one of the large forums like Pinkfishmedia or HiFiwigwam where you'll find enthusiasts well outnumbering idiots. The only issue with these forums is that unless you're a regular there, nobody will know you, so there may be a question of trust, but if you provide lots of photos and a really good, i.e. genuine, description including any faults, you should be fine.
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