To create a penguin it is free but to become a member it costs: $6.95c a month. There are deals on 6 months and 12 month memberships as well. Search Club Penguin on google and click the first...
100 bucks a week i would say
Normal its free if you are a player but they expect you to help out in fund raising
Anywhere from 75 to 300 dollars.
$75,000 initiation fee