Modify collection item with Pricing Plans

Question:
Modify collection item based on change in Pricing Plans

Product:
Wix Editor

Background:
Paid members can create listings
These listings appear as dynamic pages

What are you trying to achieve:
When their plan ends, their listing should be hidden automatically

What have you already tried:
Suggestions as a noncoder (possible dots that could connect. Maybe much of these can be bypassed):

JavaScript object field?.. Pricing Plans Settings>Automations>Action>Run Velo Code?..
Upon a plan’s end, a field of an owners item is automatically modified… The owner’s subscription status should be checked, and if their plan is ended, the field is automatically filled with a corresponding value…

Using Velo I’m already able to use filters to hide repeater results. Just a need a way for a collection’s item to automatically modify itself, based on Pricing Plans.

Additional
Similar tutorial: Tutorial: Using the Pricing Plans API for Pricing Plan Ordering and Payment

From Wix’s AI bot (but I’m too nooby to implement):