In order to change the Customer Pricing in DirectI, you will need to perform below mentioned steps:
1) Login into your DirectI admin account.
2) Click on Manage Products and Pricing & select Domain Registration.
3) Now click on hyperlink Manage Prices than select Customer Pricing.
4) It will bring you to the window like below and Click on edit button to make changes in price for each field like Registration,Renewal,Transfer & Restore.
5) As a final step, click update price.