What is a fair asking price to sell a car for parts?

I need to sell my 94 Ford Ranger either for parts or to someone who doesn't mind repairing their own car. It needs a wheel bearing and a radial arm right now. Would it be fair to charge 500 for it or would I be ripping someone off? I've put a lot of work into it, but it seems like there's always something wrong.|||Its fair as long as you tell the person which parts don't work and which ones are recently replaced and the buyer will base his decision on this fair business transaction