I have a Gold Hill  Express Bachmann Train Set. G Scale and extra track, accessories, etc.  It is in the original box.  It was set up maybe twice in our house and has lived in my attic since my boys were little.  Once we purchased this huge train set, we just didn't have room for it.  I want to sell this, I have no idea what it might be worth or even how to begin to sell it.  Suggestions?