One of our club members participated in the Good Guys Del Mar car show by helping us out in the model contest and make and take.
He brought along several of his builds to place in the show for display and among them was a Ford Pick Up that was almost the spit'n image of a 1:1 truck in the show. The owner of the real truck saw the kit and just had to have it. My friend asked me how much that kit was for in the hobby shop and I told him about $20 bucks and that is what he asked for in exchange for it!
Mind you, this was a very well built truck model and it was fully done, but, my friend said that it would bring more joy to the gentleman with the real truck and he could always just build another one!
So, sell the kit for what it is worth and not for what you think you put into it.