You need to remember it includes "Training Costs".... how many of you have ever visited the AMR Training Center?

The AMR pilot costs probably have more to do with the expansive, gi-ganta-normous training center / small city / they have built to train their pilots at.

Google Map it...
4501 Highway 360 South, Fort Worth, TX‎
The flight attendant training center is on the south side of FAA Road.