You can give a product a trial period, during which customers can try it before paying.
You can give a product a free trial period. The customer pays nothing initially, and you specify a trial period during which they can use the product before the first recurring payment.
To offer a free trial product, go to the Creating Your First Product article, and create a product with an Initial Price of $0 and a specified Trial Period.
NOTE – This feature is admin-controlled. Contact ClickBank if you want access to this feature.