Four Tiers of Membership are available:

Individual Voting Membership: $25/year
Family Voting Membership: $45/year
Sustaining: $100/year
Non-Voting Friend $25/year

Don't want to pay online? Download a paper application at https://drive.google.com/file/d/1SGjWNCiSa7bidjFpDdXCX5dA6nbIRf5I/view?usp=sharing