Billing For service subscription?

Question

CMS

Hello.
Is there a CMS on which you can organize the sale of online services by subscription?
It should work like selling hosting.
The user registers, selects a service, pays, gets access to a closed section to configure the received service.
Or just a selfie? The project is small, I develop one in the evenings, and I have problems with security. The service has been developed, but I would like to reduce the time spent on organizing the sale of the service.
PS Here prompted that it is called billing =).

Answer 1

With a small project, it is easier to overcome security problems than to fence some other garden.