Paid access to content

Hello everyone. Guys, can you tell me how to implement paid access to content on the site? I have three different roles: A1, A2, and A3. I need to set it up so that each role can view specific content a certain number of times, paying for the plan they choose. Or suggest a module that can help me achieve this; I read that in version 6 it was done through an Ubercart module, but I'm working on version 7.