When publishing a post, you’ll have the option to limit it to a specific set of your subscribers or to make it fully public.
Please note: Posts are accumulative. If you have subscription tiers at $1, $5, and $10 and publish a post at the $5 level — all subscribers from both the $5 and the $10 tiers will have access.
At this time, it’s not possible to publish posts to an individual subscription tier.