Yes, used airplanes bring only a small fraction of the original total price of the engine, kit, radio, glues, hardware, etc. and the many hours of labor are NEVER recovered unless you are building a specific kit for a specific customer and you have an understanding up front as to value of labor. An accepted practice, I believe, is to receive an unbuilt kit in exchange for building the kit. You build a guy a Super Skybolt, approximate value $150.00, you get one in exchange for the 80 hours or so of labor to build the first kit. Not much compensation for your time although the Skybolt is arguably the prettiest bipe ever come along. That all being said, the airplane you have is very attractive. Depending on the engine in it, you can expect a couple hundred dollars out of it. Free money, as was mentioned before. The question becomes: which do you prefer--the airplane that you will never fly sitting around gathering hangar rash or a couple hundred bucks in your pocket to blow on whatever hobby you prefer.