Spiritual Satanism does not charge people to join this group, or becoming a Satanist. This is something invented by Satan's enemies.
You are free to join the group, and become a Satanist for free. Donating money is up to you, but is not required.
Satan is a freedom fighter, and is for the people, unlike his enemies and their organizations where you have to pay, or sell something like your Soul to claim what you want.
Know this, we will not charge you anything.