I delivered for a while in school. Made great money. I remembered who didn't tip, but not really who was a "cheap" tipper. If its just one heat bag of pizzas 2 bucks is great, no matter of the cost. But when you have extras and specific instructions is when more is nice. I didn't care about %, just how easy was it to get the order to you. Do you live very close, hard to find house, long walk from car, or is it snowy out?