Can this let you make editors have to pay?

Yes, here is a tutorial for how to use the pmpro_after_change_membership_level hook to change a user’s role after checkout.

https://www.paidmembershipspro.com/2011/10/give-new-members-author-role/

That’s for PMPro members, but if you search gist.github.com, you can find the code.