is there additional cost to this sharing

Hi there hinkTellico,

We see you linked to the support communities from Set up Family Sharing, and have some questions about the feature.

Family Sharing allows you and up to five members of your family share things like Apple Music, Apple TV+ and other services or subscriptions. You'll also be able to share iTunes, Apple Books, App Store purchase, and iCloud Storage as well as a shared photo album, and additional options in Find My.

There's no additional charge for Family Sharing, your shared photo album, or Find My, but the services and content being shared may have an associated cost. For example, the ability of everyone in your group to access Apple Music, is available with an Apple Music family subscription.

We hope this helps!