Billing Policy

Version 1.0 – December 2017

This policy outlines how Sero! determines fees and charges, and performs billing. 

Base Fee

Your Sero! account has a base fee for each product you use. If you want to lock in bulk pricing, just ask us for a higher base fee and more included resources.

Base fees are always paid in advance.

Charge Frequency

We charge once per annum, unless we determine your account is at risk of non-payment, in which case we may charge more frequently or require that you pay in advance.

Unless you cancel your Sero! account, we will continue to charge for your subscription every year on the anniversary of your first purchase.


Sero! prices are denominated in United States dollars.

Late Payments

Late payments stemming from an inability to charge to the credit card on file may bear interest at the rate of 1.5% per month (or the highest rate permitted by law, if less) determined and compounded daily from the date due until the date paid. You will reimburse any costs or expenses (including, but not limited to, reasonable attorneys’ fees) incurred by Sero! to collect any amount that is not paid when due. Amounts due from you under may not be withheld or offset by you against amounts due to you for any reason.


Other than federal and state net income taxes imposed on Sero! by the United States, you are responsible for paying all taxes, duties, and other governmental charges (“taxes”), pursuant to the Sero! Terms of Service. You will pay any additional amounts as are necessary to ensure that the net amounts received by Sero! after all such taxes are paid are equal to the amounts that Sero! would have been entitled to if the taxes did not exist.

Changes to this Policy

Fees and charges for any new Service or new feature of a Service will be effective when we post updated fees and charges on, unless we expressly state otherwise in a notice. 

Return to Sero! Terms of Service.