That was $3.00 each
There is an equation somewhere that quantifies our pay on a per passenger basis, but no one really wants to consider the ramifications, and there would be hurdles to overcome in spreading the risk of low loads to the staff. On the other hand, it would be a self-regulating mechanism to constrain costs in traffic lulls.
The upside of course is that flying during school holidays would go very senior!
And consider the effect on your pay for ferry flights and stupid scheduling.