I am trying to find a price on some Williams trains that I have and cannot seem to locate them anywhere.  I have an engine and tender car then 5 additional ones.  They are numbered with 611, 581, 533, 532, 531 and then one that does not have a number on it.  They are Norfolk & Western. They are still in the Styrofoam and have never been used.  They have no track or transformer.  Any help would be greatly appreciated! Thanks!