How do you re-sell a domain name?

dclayman writes: What's the best way to go about selling a domain? I've never sold a domain before. I just received a $400 offer for a domain I own (radicaltrust), but I don't know if I should sell it or auction it off. And if I auction it, what site should I use? eBay? I could really use the extra cash. I was hoping to get some ideas from others here at Slashdot.