Developing Facebook Paid Application Without Fb Credits?

is it possible to create my FB app in Fb iframe and on pay button it directs to Paypal for payment and returns back to my fb app for further processing without using Fb credits ? I

Solution 1:

What part of

All games on the Facebook Platform (including mobile web apps) must exclusively process payments through Facebook Credits

is unclear to you?

Solution 2:

If the Facebook terms of use say you have to use facebook credits i don't think your app will be enabled if you don't respect that rule.

so even if it might be possible to use paypal directly, it will be a lot of work for nothing.