I have just purchased the membership plugin and I have created the three plans, Bronze, Silver and Gold but for each plan it would have different restrictions for example Bronze will only be able to message 3 sellers, Silver plan will only be able to message 5 sellers and Gold will be able to message unlimited sellers. All plans will be able to view all listings.
Unfortunately, there is no such feature, you need a custom implementation to make it work, since the Memberships extension monetizes only access to certain pages or attributes, not certain functions.