That's a tough call. From my own experience, usually you can expect to loose anywhere from 25 to 50% of your money when you sell anything RC, but it really depends on the model and how badly you need the funds for something else. The best thing to do is add up what you have invested in the model and reduce that by 25% as a starting point. When that doesn't attract a buyer, reduce the price some more, but keep in mind there is a point where you'll be better off parting a model out. Parts bring more money on their own. When you get to the point of giving something away really cheap, you might as well part it out, keep what you can use for another model, and sell the rest off.
Or -
