club memberships are often 100% free for top-status-members outside North America.
UA gives free RCC membership for PremEx and 1K (for members based outside North America).
LH Senator status automatically includes Senator- (and StarGold-) Lounge access.
SR Travelclub membership (Qualiflyer program) automatically includes Lounge admission to SR/SAbena and AA-lounges.
etc. etc. etc.