How to make each post having a price and just can be seen by the users who has paid for that post in laravel

Question

This is my first time that I make a website

I want to have a educational website with video courses

in my website there will be a lot of posts that each post will have its own price and users should pay for each post to see that post.

After the payment they always will be able to see those posts

and they will be just able to see the posts that they have paid for

I want to see how can I make the tables and relationships in such a way that I can reach my goal.

Thanks for your help.