I can't personally imagine this one being valued enough by a company or an individual that they would buy it from you for any amount.
Therefore my valuation on this one is that the maximum this domain will achieve is the amount you paid for it.
I'm sorry to give you bad news, but in this case, I feel your money has been wasted.
Don't feel too bad though, I've let thousands of dollars worth of domains expire or given them away...
What seemed like a good idea to the me of a year before, often seems worthless to the wiser me a year later.
I guess that's how you know you're improving, and the price we pay is simply the price of our education.