Cackle Hatchery bought LF black Ameraucana chicks from me to start their flock and were mainly interested in large blue eggs, because their original plan was to use them to cross with their Easter Eggers to produce "bluer" eggs.
They don't sell Ameraucana or Araucana chicks, but they do offer Easter Eggers and a new blue egg layer also.
http://AmeraucanaAlliance.org/faq.html#One