How do I change the prices that are already listed on my jotform?

This prices I need is different than what's on the form and it is not letting me change it.

If there is a payment integration on your jotform and you are looking to change that then you would need to modify the products listed inside it. Please see http://www.jotform.com/help/47-Order-Form-Basics and http://www.jotform.com/help/165-Setting-Up-Your-First-Order-Form.