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

amount

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

Thing > Property > amount

The amount of money.

Usage: Between 100 and 1000 domains
Values expected to be one of these types
MonetaryAmount
Number
Used on these types
DatedMoneySpecification
InvestmentOrDeposit
LoanOrCredit
MoneyTransfer

Source

https://github.com/schemaorg/schemaorg/issues/1253

Schema Version 3.3