Originally Posted by
Magic Pickles
Mid-year addition of AU usually doesn’t trigger a fee and will be combined as a $525 AF fee on your anniversary.
Originally Posted by
Magic Pickles
Mid year addition did not attract a fee until the anniversary date. As always, YMMV.

Same experience here, with 8 months left in the year I wasn't charged for adding an AU. At the anniversary, I was charged $450 and $75 in separate transactions on the same day.