How much does it cost to merge butterfly natural life?

Hi, was wondering if i should interlace curves or butterfly life, i know how much curves is, be wondering about butterfly existence, what is the joining fee, and the monthly fees? do you enjoy to sign up for a year at a time? Thanks I did a search on this company and here's the correlation to the search I did that may be of even more relief:
http://search.yahoo.com/search?search=Bu...