The submission procedure for paid applications differs slightly as compared to the submission procedure for free applications.
Note
Note that we are referring to paid applications on the Marketplace and not in-app payments (however, the submission procedure for both paid apps and in-app payment apps is the same).
For the purpose of in-app payments, you can use any third-party service but you will need to take care of the implementation yourself. Firefox Marketplace currently supports only Bango as their payment provider. The following illustration for submitting a paid application:
Now, while submitting paid apps to the marketplace, you will need to select the Paid / In-app tab instead of the Free tab. The rest of the procedure is pretty much the same. You just need to fill out the Compatibility and Payments section as well for Bango.
Remember, you will need to set up a payment account with Bango first. Firefox Marketplace also offers an option to promote...