I don't know how much of you know about the guitar synthesizer system from the eighties, the GR-700... But I got a hold of one, along with a Standard Gibson Les Paul set up with the GR-700 pickup. If you haven't seen one of these systems before, it looks very, very strange. I'm planning on selling it, but I have absolutely no idea how much it should go for -- what is a fair price range? It's easy to find the market value for a GR-700 because they were so numerous, but I'm having trouble determining the value of the guitar itself. I have found absolutley no information about it and it's not on ebay. Does anyone have any clue what kind of value it has, or knows of a way that I can find out?