It is almost in the top 100,000 in Alexa yet no content, 201 backlinks and is sandboxed by Google. I am thinking you purchased a ton of traffic and links. You did not get the results you wanted and actually got sandboxed by Google, thus you are selling. What is the story behind this domain? This domain could be worth a TON with that Alexa ranking or it could be worthless. I think anyone looking to buy this domain should get the story of what happened before we can really make a judgement of what the domain is worth.