Most of the stuff I buy is just $RANDOMNAME_MADEUP_BYIMPORTER that was produced to hit the lowest cost point on amazon, and which will work fine in nearly every case I subject it to. For example, my BOJACK 50 values 1350 Pcs Resistor Kit. Do you want me to go measure a sampling of those and compare it to the equivalent kit (or pages of components) from DigiKey?

Not sure about the counterfit, the PSU I just got is from ARESGAME which appears to be a California company, and from every detail of the product, it appears to be legitimate. I just popped it in my main desktop computer (cyberpunk 2077 was crashing/windows rebooting when I hit 400W). I fully expect this device to work as expected for the next 10 years I will operate this machine. Same for the $1K Dell monitor I just bought. This thing was obviously made for dell and sold by dell with top grade components.

A small fraction of the stuff with $RANDOMNAME I've bought on amazon has been total and complete crap, but once should probably be suspicious any time something is sold for 1/10th its ostensible manufacturing cost.

For people like me who can't remember all 100k acronyms: "GIGO" is "Garbage In, Garbage Out".

I agree with the sentiment though - a lot of stuff on Amazon are not exactly what is written on the tin, and so when you read official spec of a component you may get stuff that's way off - noisy opamps, that sort of thing.