Knowledge is a form of power – Books, Scroll, and Maps (and related materials) manifest this. It is generally hoarded in many private collections (such as the “Great Libraries“). There are exceptions to this – such as the Brayfhayl cultural library in The Saelish, the Libraries of Port Towne, the Thane Libraries.
In order to read inscribed items, the reader must be literate in the language they are written in.
Mystic Inscriptions: “Spell Books” generally follow the rules of Occult Codex or Folio. Some, like Blood Scrolls, are not intended for the living and have potential consequences if read.
Crafter’s Mark: The use of an item made by a famous and recognized crafter (or their guild/trade/school) may also be the equivalent of a Prestige Marker.
Materials: Dependent on setting, culture, and technology.
Mundane Cost: Dependent on setting, culture, and technology.