core + bib (Bibliographic Extension): terms relating to books and bibliography.

offers

Canonical URL: http://schema.org/offers

Thing > Property > offers

An offer to provide this item—for example, an offer to sell a product, rent the DVD of a movie, perform a service, or give away tickets to an event.

Usage: Over 1,000,000 domains
Values expected to be one of these types
Offer
Used on these types
AggregateOffer
CreativeWork
Event
MenuItem
Product
Service

Schema Version 3.3