I am trying to sell all of these games, but before I do I need to find out how much they are. If anybody can either help me with a link, or a toy appraiser in the Baltimore, Md., York, Pa. or Harrisburg, Pa. areas, I would appreciate it. I do not have a system to test if they work or not, but if they are worth it, I will buy one. They have not been played in around 35 years.