There was a comment left in the original story asking, "Aren't all 20 limited editions sold out?". The answer is apparently not in that Tiziano Zullo has replied they are still available at a cost of $2,020 euro.
Original story: http://italiancyclingjournal.blogspot.com/2009/08/maxisilenus-columbus-max-by-zullo.html
See http://www.zullo-bike.com/ for contact information.
Stories, including cycling trip stories, for the Italian Cycling Journal welcome; contact veronaman@gmail