a) $7/hour for 5 x 3- to 4-hour training sessions + $7/hour for prep time for training (although they allot only 2 hours prep/session and it takes a lot longer than that).
b) $15/hour for first course (class time only) + $7/hour for 42 hours prep time (although it will take a lot longer than that to prep).
c) more than $15/hour for subsequent courses (class time only), rate depends on seniority and student evaluations, + $7/hour prep time but only 7 hours prep allotted.
The pay is marginal, but if you are getting paid to study for your own MCAT, it's not so bad.