Hi Eric
This is probably not a question that most people would like to answer. Advising on price could always be seen to have possible motives attached to the advice for whatever reasons, and there's always the possibility of future resentment when you see similar gear going for a different price later on.
Best advice I think is that you look through the for sale archive and look for what others have gone for and judge based on these. Look for all Chinese-manufactured makes like your Saxon such as SkyWatcher in the same aperture as yours - i.e. 8 inch or 200mm.