Okay. Sorry, I misunderstood you.
Yes. You are correct. Sorry, I've just never heard it that way. So yeah, if a user has not purchased a subscription either don't show them a page, or don't allow them access.
I don't want to store the non-subscription and subscription pages in HTML since a user could just un-hide the HTML for subscription users only. I don't think Squarespace would allow me to do that. Additionally, I don't think squarespace allows access to their servers anyway.