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.
The behavior between the rich and the poor varies. It all depends on mindset which influences the way we see things and do things.
In my country, it's not all that is seen to be rich is actually rich because it is not sustainable due to lack of assets.
The rich, whether legitimate or illegitimate, base on the level understanding.
Some speed recklessly.
Some invest.
Most of the people called poor are very meticulous in the spending and at their level they make great impact, while some poor would want to spend to show to world they have arrived thereby remaining same.
So it's all about the mindset.