How much is the annual fee for ABPP?

Excuse me, could you please clarify the cost structure associated with the ABPP program? Specifically, I'm interested in understanding the annual fee that needs to be paid for continued participation or membership in the ABPP. Is there a standard fee that applies to all members, or does it vary based on certain factors? Additionally, are there any other fees or charges that one should be aware of in relation to this program? Your insight would be greatly appreciated.