Log in to Portal and go to Monetization -> Monetized Subnets, click the subnet you wish to edit.

IMPORTANT!
If the subnet is not leased, the price will be changed immediately. However, if the subnet is leased, the changes will only apply to future orders.
Click Pricing at the top to find the prices of your subnets and click Edit Pricing button to change them.

Click Edit.

Enter the new price, and click Save.

Congratulations, you have changed your subnet pricing.
If you need any help, contact our Customer Support team via help.ipxo.com.