[Plugin: Custom Post Limits] Limit Post with Paypal order

Hi,

this is a great plugin.
I have a question. Is there a way to limit posts with a paypal order.
If someone wants to write more posts they need to pay through paypal allowing them to write number of posts set up by the admin.
I want the authors to purchase the possibility to write more posts?

Thanks,

http://ww.wp.xz.cn/extend/plugins/custom-post-limits/