Hi @sazzer,
First of all, I want to clarify that M2M tokens are used when your backend or CLI (non-human) wants to use an Access Token issued by Auth0 to call your API. This is very important. Our M2M pricing only makes sense when you want your applications to access your APIs in a non-interactive way.
As you’ve already noticed, this doesn’t include Auth0 APIs. For example, if your application will only access our Management API or our Authentication API, then you will not consume any of your M2M token quota.
A more visual explanation can be seen here: Machine to Machine (M2M) Communication - Auth0
In a nutshell, if you don’t need to secure API Authentication for Non-interactive Apps, then you will not consume any M2M token quota.