Monthly fees are calculated using three variables.

The first part of the billing is the minimum monthly hosting fee. These are selected here, during registration:

http://www.ncrretailonline.com/pricing/hosting-plans/

This fee is invoiced month to month on the date the NRO store was registered. This billing is to cover the current month. It is not billed in arrears. You can change the hosting package, at any time, by contacting support and asking to be moved into a different package.

The second billing variable is the based off of a transaction fee. The transaction fee is is different, depending the hosting plan for which the NRO store is registered and is based upon the total sales invoiced for the billing cycle. Transaction fees for the Starter, Plus and Pro options cap at $3000.

Bandwith/storage overage is the final billing variable. These limits and rates can be viewed in the hosting plan details.

Billing for transactions, bandwidth and storage are billed in arrears and are based upon the previous month's activity.