Hi,
I plan to sell subscriptions to institutions such as schools and universities. In this case, students and faculty with a valid school/university email will be able to access protected url/pages upon login. User sessions are unique. Normal individual subscriptions are required too. Students may convert their school subscription once they leave the school for a discounted price.
User profile information will be accessible from my php/mysql application so user can be validated also by the application.
Need taxes to be calculated, added to invoice, and taxes paid to proper global authorities including in EU.
Need the other standard features as well.
Thank you.