Looking for on-the-shelf SaaS (auth + user mngmt + payment)

Hi everyone,

Glad to be part of this amazing community :)

I have learned different technologies such as setup ec2 instances, docker, running con jobs, web scraping etc. That allow me now to be able to generate content automatically in csv files. I know this would be of great value to some people.

I am now looking for a kind of on-the-shelf SaaS that would have included a user authentication (with a user management system: email account validation + admin panel ) as well as a payment processing system (such as Stripe) and to which I would just have to send the database/csv files daily for the data.

Does this already exist or I should learn how to build that?

Thanks a lot!