7$ A month.
It doesn't cost anything but if you want membership then it will cost you money
$17.85
£49.95.
You cannot have a free membership on club penguin as all memberships cost money. You have to pay a certain amount each month and in my opinion is not worth the money.
1 month is $7.95.
It cost £19.00 for a 6 month membership for club penguin
It depends on how long you want your membership for.
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The cost to join the AAA Club depends on the membership coverage. One can choose the coverage from Basic which can cost up to $49.00 to Premier membership coverage costing about $117.00.
Not for basic membership :) Family/Australian Founder Membership does cost money though, but you have an option of getting those.
I don't know what a 'curves membership' is, but you can get more information about membership on the Club Penguin website.