Which one is my child, domestic or international? [US citizen outside of the US]

I have asked this application fee matter twice on CC, this is the reason why I’m confused. It may not differ much, for us maybe about $200 but surely nice to know if we pay correctly.

I wonder if there’s someone from University Admission Office lurking here who can chime in or whoever has the first hand information. I’m sure I’m not the only one asking.