I have delivered pizzas on and off for years whenever things were slow when I was in business. Great way to learn surroundings!
As for the income, its all about the area. In GA, 2 different cities, I would average about 450 a week, In Panama City most nights were over 100, so I averaged 600 a week.
I don't know about you, but that's more than I make currently as a percentage expedite driver. But I love my job, things will get better!