Creates the Illinois Integrity, Notification, and Fairness in Online Retail Marketplaces for Consumers (INFORM Consumers) Act. Requires online marketplaces to collect and disclose to consumers contact and other information about high-volume third-party sellers. Provides exceptions. Provides that if the Attorney General has reason to believe that any person has violated the Act, the Attorney General may bring an action to restrain by preliminary or permanent injunction the use of such a method, act, or practice. Creates the Organized Retail Crime Enforcement Fund in the State treasury. Provides that subject to appropriation, moneys in the Organized Retail Crime Enforcement Fund shall be used by the Office of the Attorney General to award grants to State's Attorneys' offices and law enforcement agencies to investigate, indict, and prosecute violations of organized retail crime. Amends the Criminal Code of 2012. Creates the offense of organized retail crime. Defines the offense and establishes penalties. Provides that a retail mercantile establishment that is a victim of a violation of retail theft, organized retail crime, financial institution fraud or related offenses, or looting shall have certain rights. Provides that an issuer shall not provide a debit or credit cardholder or a person who utilizes an account number or code the value in any manner of any item purchased with intent to defraud the issuer or a person providing an item of value. Amends the Statewide Grand Jury Act. Provides that a Statewide Grand Jury may investigate, indict, and prosecute violations of organized retail crime. Amends the State Finance Act to make conforming changes. Effective immediately, except that the Illinois Integrity, Notification, and Fairness in Online Retail Marketplaces for Consumers (INFORM Consumers) Act takes effect January 1, 2023.