It has been awhile since I worked at Domino's. We did not charge for delivery at the time, this was ~2006 (only a few years removed from the "delivered in 30 min or it's free" era). I did receive 55 cents per delivery for mileage at the time though this was just added to my wages and would show up on a paycheck. Hourly wages were either $1.50 or $2 below federal minimum wage. IIRC the minimum wage was around $5.50, maybe IL added a little extra on top since $5.15 rings a bell, too, whatever. I loved it, though, at the time.
Was going to community college, go work a dinner rush shift for 3 hours from ~4:30-7:30 and have $40 cash in my pocket. Or work as a "late driver" (2nd longest shift, you work until things slow way down and it's just you, the manager making pizzas, and the closing driver) until about 11pm on a Friday or Saturday (never both, would be too socially damaging plus these shifts were earned, not given out) and have $80-$100 in your pocket. That was bigtime dough! I lived with my parents and expenses were very low and I was able to squirrel away my whole paycheck and essentially live a very social life just on my tips.
I'd estimate in all, would average about $15/hr not accounting for petrol though you always came out ahead on the mileage rates. Much higher than the burger flippers, the lifeguards, and many other entry level jobs for young punk kids.