Had a paper route in a neighbor hood full of retirees in the 70’s. They had to strictly budget. No tips, and if the paper was five minutes late, they would let you know about it. My pal, also a paperboy, couldn’t understand why I was always broke. Then he moved to that neighborhood, so we traded routes. My new customers were working folks and they paid a dollar a week for the eighty cent weekly subscription. Roles were happily reversed ;)
“I want my two dollars!”
The middle and lower class folks on my route always tipped something. The upper middle class tipped well. The worst was the richest person on my route (and, arguably the richest in town at that time). She wouldn't even pay me for the papers. It got to the point where she had to pay the office directly and they'd let me know whether to deliver. Never once got a tip from here. I picked up a second, adjacent route, and they were mostly upper middle and upper class business owners. They tipped well. Most had built their businesses from the ground up or worked in them and inherited them and did well by their customers and employees.