Authors affiliated with an institution participating in the license agreement are eligible to receive a $250 USD discount on the article processing charge (APC) for all ACS hybrid journals.
The APC discount is applied upon acceptance of manuscript. Authors must indicate their institutional affiliation upon submitting of their manuscript in order to benefit from the discount. See: How to Publish Open Access via Author Funding (ACS AuthorChoice) .
Open access publishing prices: https://acsopenscience.org/open-access/pricing/