Thats a tricky question to answer.
For a start it will not be worth what you would like it to be worth.
You could put it in your local paper or Gumtree site at a price you think it worth but take near offers.
You could put it on Ebay and either stipulate pickup only or factor in postage,which with packaging etc will not be cheap.
You could strip it down and sell the components individually, which is what I tend to do, usually make a little more that way.
As to what its worth, max £100 and that I feel is probably generous, or maybe I 'm cheap.