[georgemcbay]

I am not a lawyer, but the $1350 is like a cap on the 4x amount. If the fare is $200 they must offer up to $800 ($200x4). If the fare is $400, they must offer up to $1350.

$400x4 = $1600, so without that $1350 cap they would have to offer $1600 using the 4x rule, but because that cap exists they can offer just $1350. Basically any fare above $337.5 can be treated as the same amount by the airlines, which is kind of silly since that's a really low fare relative to any kind of average flight cost.

The way people seem to be getting confused is assuming that cap is the maximum they can legally pay.. it isn't, it is the capped minimum they have to pay when following the 4x rule.