I don’t use them often because of what a colossal pain in the @$$ their booking system is, but I’ve noticed when I book int’l non-rev travel on AA, the taxes & fees are way higher than what we pay on our own metal. Happened to be traveling on the same flight as a buddy who paid full fair & sure enough, I paid 2x in “taxes” what he did.

Edit: after looking at some other bookings I don’t think it’s just AA but I have noticed it specifically on them- seems to happen more in Latin America, maybe? Just not sure why “taxes” would be variable from one airline to the next. Anyone understand what’s up with this?