"Multidimensional" Subscription Levels

Hi,
first of all thanks for your amazing plugin.

I’m building a website where users can read technical articles paying a subscription.
Articles are organized in categories and are associated to custom fields.

In particular, every article is identified by:

1. COUNTRY (a WordPress category, multiple choice possible).
For example: USA, China, Japan
Different subscription fees will be calculated according to the number of countries selected: less than 10 countries, between 10 and 20 countries, more than 20 countries.

2. TOPIC (a custom taxonomy, multiple choice possible).
For example: Books, Depliants
Different subscription fees will be calculated according to the number of topics selected: less than 3 topics, between 3 and 10 topics, more than 10 topics.

3. FIELDS (a custom taxonomy, multiple choice possible).
For example: packaging
Different subscription fees will be calculated according to the number of fields selected: less than 3 fields, between 3 and 10 fields, more than 10 fields.

The TOTAL price of the subscription will be determined by the number of countries, topics and fields selected AND by the size of the company that buys the subscription (4 ranges: 1-10, 11-50, 51-99 and 100 employees).

Let’s make an example. I’m a company with 20 employees (cost: 100$) and I want to read articles:

• about 5 countries (USA, Mexico, Brazil, Cuba and Canada) —> 250$;
• about 2 topics (Books and Depliants) —> 150$;
• about 1 field (packaging) —>100$

My total subscription is 600$ per year and I will be able to see on the website:

• articles in WordPress categories USA, Mexico, Brazil, Cuba and Canada.
• Within this categories, articles identified by custom fields “Books”, “Depliants” and “Packaging”

Is there a way to build this on S2Member?
What I’m interested in is mainly the ability of defining correctly what contents the user can see.
I don’t necessarily need the subscription amount to be calculated automatically – I may also insert it manually in the backoffice if it’s possible.

https://wordpress.org/plugins/s2member/