Your monthly Ninja Number bill will be the same every month with the exception of the first 2 billing cycles. When you first sign up for Ninja Number, you will be billed the day of your activation for a full month's service, and then again on the following first day of the month. However, when you receive your second bill on the first of the month, you will notice a credit on your account. This credit will be a calculated pro-rated amount based on the day you signed up for service.
The reason we give you a credit back is to make up for those days you were not using Ninja Number. For example, if you sign up for Ninja Number's purple belt plan on December 15, you will be billed on December 15 for $39.95, and then again on January 1. However, your invoice on January 1 will be approximately $19.99 because the pro-rated credit will be applied to your bill based on the number of days you did not have Ninja Number in the month of December.