Earlier quoted context omitted.
See “The Sam Vimes “Boots” Theory of Socioeconomic Unfairness”: The reason that the rich were so rich, Vimes reasoned, was because they managed to spend less money. Take boots, for example. He earned thirty-eight dollars a month plus allowances. A really good pair of leather boots cost fifty dollars. But an affordable pair of boots, which were sort of OK for a season or two and then leaked like hell when the cardboar…
This annoys me every time I see it. Good boots don't cost 1.5 months of a worker's salary. They cost a day's or less. And if you buy used stuff you can live cheaper than ever. In that respect it's a golden age for the poor. The problems for the poor in modern America are health care, education, and rent.
Literature doesn’t have to write literally about something for the point to be made. The boots are a stand in for whatever the issue at hand IS (rent vice buying a house would be apt).