Greetings!

I want members to be able to buy a product, let's say product X, in commerce, and after buying, they get access to view a specific page or post that they only access if they purchased that product. 

I know I can create this by making individual groups, but we plan to have a lot of products along the way, and making a special group for each one is going to be tedious of there are hundreds of products.

Does anyone have an easy way to simply give a user access to a page or post vs group specific permission to make this easier after buying? 

I came looking for the same thing. Does anyone have an answer?