Add a plan targeted for a small family, for example up to 6 accounts each with features similar to the basic sync plan and for a lower price than paying for 3 individual accounts.
Proposed solution
As an example look at the Proton Duo and Family plans: https://proton.me/family
Compared to the Proton Unlimited plan: https://proton.me/mail/pricing
Billing would be shared, obviously.
Current workaround (optional)
None. Each family member must have a separate subscription.
As a family of 6, with children studying at university (and taking notes in Obsidian), it is particularly expensive to pay for each of us. A family plan would be more than welcome
For your use case of 1 vault per user and 1-3 shared vaults for everyone, you’d only need one user to have the plus plan. The vault limit for a given account is based on the number of remote vaults that user has created, not the number of remote vaults they can access.
Family head: Plus plan, creates shared vaults and invites family members to shared vaults
Other family members: Standard plan, creates their own individual vaults, has access to shared vaults they’re invited to
This is not to say I think a family plan is a bad idea, I just wanted to clarify how vault sharing works today.