I caught this conversation on Amazon (link below) a little while ago. Apparently AmeriColor was experiencing a shortage of one of the ingredients in theirs; perhaps Ateco is experiencing the same thing?? I have no idea if the AmeriColor info is correct; just hearsay. Have you tried contacting Ateco directly, or a smaller supplier that supplies their product, to ask? I'd love to know the details myself, just out of curiosity.