1. I haven't checked lately, but they occasionally have old contract rates displayed. Consider the posted rates as minimum.
2. I usually MAKE more than minimum, but seldom FLY more than minimum. Duty rigs tend to enforce that. Our minimum is 62 hours, but I average 70-72 for pay, but 40-50 actual flying.
3. No cost of living allowance. No holiday bonus. Some carriers have night, international, and/or overtime bonuses.
4. PS is usually an annual bonus. payouts vary wildly, between airlines and between years. Could be a couple hundred or tens of thousands of dollars. Don't rely on it as "guaranteed" income.
Bottom line: Budget for minimum guarantee. If you make more, save and/or spend it AFTER you get it.