Your users can pay you by PayPal on DRM-X. It's very easy, you just need to make some settings in your DRM-X account. Here are the steps:
1.Go to your 'DRM-X Account'
2.Click the 'Account Settings' in the left menu
3.Choose the 'Payment Preferences'
4.Input your 'PayPal Account' and click 'Submit' button when you finish.
Now, your end users can pay you by PayPal if their account balance is not enough.
To see the video demo ' End User Order Content Demo'.