Power Apps Portals Licensing. External users must be appropriately licensed to access power platform services and data. The power apps per app plan is priced at usd3 per user, per app, per month (minimum purchase of 200 licenses) via volume licensing (vl) and cloud solution provider (csp) channels.
This leads me to believe that an undetermined number of external users could access monthly, at a rate of 200$, while no more than. Power apps portals is expanding beyond dynamics 365 and enabling the power platform and the data source is common data service (cds). This plan provides an easy way for customers to get started with the platform before broader scale adoption.
Critical path training has been licensing it's courseware to other training companies for over a decade.
Pay per login (multiple logins within a 24 hour period count as a single login) anonymous users: Along with this versatility, power apps. This is from the power platform licensing guide (june 2020) a login provides the authenticated user with access to a single portal for up to 24 hours. Pay per login (multiple logins within a 24 hour period count as a single login) anonymous users: