You mean marketing tricks people into buying stuff they don't need ? Now that's news As for your question, it's mostly marketing plays with knowed biases and a

You mean marketing tricks people into buying stuff they don't need ? Now that's news As for your question, it's mostly marketing plays with knowed biases and affects. And low-income people are all the more pressured to buy stuff on discount because they feel like they can only get it now. When you earn 5k a month, you don't really care about a discount, you can buy that Nutella whenever you want. As for their saving on important stuff while spending on consumerist stuff, they just follow the norms we push down their throats. Nobody knows you eat pasta and shower with cold water. Everybody can see your 5 years old smartphone and dirty cloths.