In order to change the Sub-reseller 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 Sub-reseller 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.