Hi @whatsnew,
We don’t have any concrete plans for this, but the payment structure in OJS is fairly flexible and much of it will accommodate the kind of interaction you describe. The missing pieces OTOH would be the ability to define a single-purchase price for content (either article or galley), access controls for purchased content, and additions to the existing purchase code to support this alongside subscription purchase. Pay per view is already implemented in OMP so much of that work would be porting those elements from OMP into the shared library that both OJS and OMP share, along with some hooks into OJS to make use of them. I’d be happy to review PRs to add this.
Regards,
Alec Smecher
Public Knowledge Project Team