There are only around 300 members, and it's by invitation only. Its rumored to cost upwards of $30,000 just to join, then $10,000 in annual dues. Membership is super exclusive and made up of people like Warren Buffett, Bill Gates and Condoleeza Rice with a few former pro athletes and coaches thrown in. The cost isn't as prohibitive as the exclusivity of the invitations.
Unpublished
Invitation only. Several hundred thousand dollars, I would think, but not sure they publish that info.
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