actually griswold did have a step stool but they did not make it.Someone here will know who did.Is in the blue book on page 214.They are more collected i believe for the hardcore griswold collectors seeing how they were not actually made by them.Book says 200 but i just bought one last month for 25 on ebay.So to answer your question I would say they are valuable to the right person on the right day but mostly not to much from what I have seen so far.Heres the on I have.