A $250 minimum base fare (before taxes and fees) applies for each round-trip ticket.
I booked a fare with a $261 base fare, $304.60 total. AA.com still shows that. The e-mail says $242.79 (and the rest in taxes and fees, still $304.60 total), thus making it ineligible.
Another itinerary, AA.com shows $288.00 base/$330.10 total, and e-mails says $267.90/$62.20 taxes ($330.10 total).
In this case, no big deal since it still qualifies, but very misleading by AA.com.
On the phone with BE sorting it out--will update.