How to make a paid Q&A system for modx revo?

Question

MODX

Hello.
Please tell me how you can implement a question-answer system with payment per question. Those. the user buys the number of questions (1,3,5, etc.)
From the beginning, he thought with the help of subscriptions and a question-answer add-on. But somehow it didn't work out.
Then with the help of the store, the same something is not right.
Can someone tell me what they did and how.
Thank you in advance

Answer 1

Order a component. Collected from g * on and sticks. Plus, throw a little of your own.
Most of the functionality is there, it remains to add a little logic.