Generally speaking, electronics are the one thing that almost always follows the "you get what you pay for" rule. To a point, though. Headphones, for example, are better the more expensive they get. Up until they're about $200, that is. Anything higher than that is just wasted money.
Just chiming in with an alternative perspective on headphones.
I personally disagree that anything higher than $200 is a waste. Diminishing returns is subjective relative to one’s enjoyment, but I think I’ve landed on a few headphones around ~$300ish I am very happy with.
I own headphones significantly more expensive than that, but I wouldn’t call them a waste of money since they bring me tremendous joy and they are better at reproducing sound to my preferences than my cheaper pairs.
But for me, if I had to somehow objectively quantify my joy-per-dollar between some of the really good ~$300 pairs and my top of the line pairs, it wouldn’t be so significant that my quality of life would be dramatically altered.