You get what you pay for.
It's easy to understand that when you buy stuff at cheap prices you shouldn't expect high quality.
It's also not hard to understand expecting quality when you pay good prices.
But there are some apparent exceptions that often cause confusion.
You can get good quality for cheap prices. But you can't get very much. Usually, just after you brag to your friends about how you got a really fantastic deal, you find that you got what you paid for -- a little bit of good quality. and that's the end of it. Just a very little bit.
And you can pay big money for big, empty promises, and get big, empty results.
And you can be pulling down the big bucks for not a whole lot of work, but you find that the money can't buy you what you really need. It's like piles of sugar candy -- enpty calories, fake value. People whose "salaries" are in the range of more than four times the median wage generally find themselves in such a situation. The money just gets in the way.
That's why people who "earn" a million dollars a month generally end up wasting it on drugs and meaningless sex.
Then there's also the possibility of slaving away at slave wages, intending to give value and finding that there's a limit to how much you can give. It's not the depth of your reserves. If your employers aren't willing to give value for value, it quickly becomes difficult to give value back. And you end up in the squirrel cage, wasting your time in meaningless labor no matter how hard you try.
Now, there are, indeed, times that you can get high value, high quality, for not-so-much money, and not be stuck with the little bit that ends quickly.
Money is only a proxy for value. You get value for value, and there are other ways of giving value than by paying money. Some of those ways are much better than money.
But that's still not a good reason for being cheap.