How does paying for this service work?

To pay for this service, you sign up for a free subscription plan and then pay a flat fee of $2.99 per question. The amount charged at the end of each monthly subscription period is based on the number of questions you have asked during that period.

Charging you this way saves you the unnecessary transaction fees you would otherwise pay for each question separately. If you have not asked any questions during a monthly term, you will not be charged.