Poor buying when things expensive they are expert buying top in everything and FOMO in also the middle class are expert on buying highest prices and not just buying they buy it with credit.
Rich buys when something is with good price low price poor buys just to spend money.
Middle class behave like poor too they buying expensive.
Poor people mainly buy products to meet their needs, but they never check the quality of the products. Middle class people don't have the budget to check the quality of products, and they don't buy even low-quality products. But those who are high-class basically check the quality of the product and then purchase it, regardless of the price of others.
Not that poor people don't like quality products, just that they don't have enough money that will reach them to buy quality products and still have money to pay other bills, is the major reason poor people don't go after quality products. The middle class have enough money to achieve what they want, and you will see them living a luxury apartments were people will know that they are not poor.
Everyone here want to live a wealthy life, which is the reason people are struggling light and day to make sure they have potential projects to invest and hope for wealthy life to experience