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.
I kind of understand your point sir, the poor and middle class spends lots of money packaging like the rich while the rich who are already made go for good things and sometimes spend less than the poor and middle class on a normal day.
For example: when we were younger and my family didn't have a car, mum would buy expensive clothes if we would travel for Christmas or vacation because she believes you should dress fine while being seen on the road and we'll take public transit, but when we finally had cars, she was less bothered about our appearance throughout the journey since no one is really seeing us, so we're free to even wear house clothes throughout the journeys since we're inside the car.
The poor always want to behave like the rich, both in their appearances and their composure and the rich want to behave like the poor that is why you will see a rich man today using outdated gadgets and behaving old fashion. This is simply the Irony of life.