We will send you an invoice once your study is live. You can pay this invoice through a SEPA Bank Transfer or PayPal. If the site you belong to has an existing license for Castor, you will need to enter the site billing code into the applicable field within the study settings.

You can calculate the expected cost of your study by filling out the form on the pricing page. When going 'live', you will be provided with a payment agreement which shows the total cost of the study. 

If you are part of a site that has a contract with Castor - you will not be invoiced. You may still be shown the price calculation when changing the study to live.