One dollar for FO, Two dollars for Capt, per passenger flown, all regional airlines across the board. 15 on/15 off. Mainline, three dollars for FO, four dollars for captain. 15 on/15 off

50 seat Regional - 5 or 6 legs a day=
FO - $250-$300 a day ($45-$54k per year)
Capt - $500-$600 a day ($90-$108k per year)

767 -400ER mainline (178 pax)- 2 legs per day =
FO - $1068 a day ($192k a year)
Capt - $1424 a day ($256k per year)

Good quality of life, with only 15 days on + pretty good pay. Add it to the price of a ticket, and the passengers would never notice it.