We make the equivalent of between $1.25 (trainee) and $6.25 (ALS) per hour base pay, if you do the math. We are paid an "incentive," for 12 hr shifts.
Trainees (driver or medic, typically without EMT card): $15
Second BLS medic (we can have up to 2 BLS providers on a rig): $30
Driver: $35
Primary BLS medic: $50
ALS (CC/P): $70 or $75
We also get that same amount for each transport after the first (so if you do 0 or 1 transports, you get the base pay... 2 transports, base pay x2, etc). I'd say we average about 3 calls per day, which probably averages out to 1 transport per shift, with the other being a sign-off or standby etc.
We have one on-duty crew, but we have three ambulances we can put into service if crews are available. If you staff a 2nd or 3rd ambulance call, you get paid the base pay even if you don't transport.
Our typical transports last about 2 - 3 hours, 3 - 4 by the time the rig is cleaned and paperwork is done.