For current One-Year supporting members (expiring August 31, 2025) who have decided to upgrade to a Four-Year supporting membership (expiring August 31, 2028) within a few months of becoming a member. This level of membership makes you eligible for the same benefits as a Four-Year supporting member. A completed upgrade will recognize your membership as a Four-Year supporting membership that will expire on August 31, 2028. $120 gift ($85 is tax-deductible)