Ionic Cloud Plans and Limits

I´m researching social auth methods and came a cross firebase, aws cognito, azure ad and auth0.
All of them scale with the amount of users, exept for firebase and it seems like ionic cloud auth doesn´t either.
I can´t find any answers. Does Ionic Cloud Auth scale with the amount of users ?

The same is for push notifications. All other Providers are also scaling with the amount of push notifications.
With ionic I only see a limit of 10k. How is that priced to “unlock” more ?

Thanks for your time.

You might want to take note of these:

Ionic Auth has been deprecated. As of January 31, 2018, we will no longer provide the Ionic Auth user authentication service.