Made a couple of bookings yesterday at AA.com and noticed a disclosure I hadn't seen before, Now maybe this isn't new. And the reference to a UK-billed Paypal account tells me maybe this has something to do with the joint venture with BA and booking BA flights? I wasn't charged a credit card booking fee for the two (entirely domestic) flights I booked yesterday. And the pricing of the processing fee in pounds further suggests it's a UK-specific thing. Though on in the example above to see it come up on a US domestic itinerary. Maybe old hat, but has anyone actually seen a credit card processing fee charged by AA.com?