Recurring payments on WordPress via WooCommerce and Robokassa

WordPress site. The site has articles that are divided into sections. It happens that one article can be in different sections.
What needs to be implemented:1. So that the articles are available only after payment2. Make several different payment tariffs:- unlimited tariff - access to all articles for 1 year, with subsequent automatic renewal (recurring payment) - installment plan - access to all articles for 1 year. Payment is divided into the first 3 months. If the next payment is not made, then access is closed. Recurring payments are also connected - monthly tariff - monthly payment according to a certain scheme (that is, different recurring payments). If payment is not made, then access is closed. - tariff for section X - access to articles that belong to section X. Payment for a year. - tariff for section Y - access to articles that belong to section Y. Payment for the year. There are many sections. Make it possible to create tariffs for sections automatically.- also make it possible to open each article separately, for a small price. That is, without purchasing a tariff, but only one item. 3. Design a page where all tariffs will be described and you can choose a suitable one.
The site uses WooCommerce, and the payment system is Robokassa. They have a plugin for recurring payments, but I warn you right away, it is a mess, it will have to be redone or completed.
Write how you are ready to implement, for how long and cost. Intermediaries - pass by, I communicate directly only with specialists.