First post here on FT and lots of great information. A friend invited me to join him on a trip to Ireland (US Air 722 PHL-DUB, 723 DUB-PHL). We leave next week and currently have middle seats 13DE over, 12DE back. There are plenty of aisle "choice" seats available but at $99. Is the difference between the seats enough to warrant the $99? Do the "choice seats" become free at some point? If so, when?