It's kind of ridiculous to think that the act of verification is somehow an ongoing service that's needs a monthly fee. When you open a bank account or line of credit or anything else that requires identification that action generally takes place once. If you prove you are who you are claiming to be then next week or next month or next year you are still verified. What does FB do every month for that $12 or $15? There is no ongoing maintenance for verification. It's a one time thing.