My personal experience as well, but, y'know, plural of anecdote. The thought does cross me that maybe I just don't recognize it. Then, while it is unambiguously harmful to the genuine vendor, what is the consumer harm (assuming it is not just garbage, or like, toxic etc.)?

That being said, there is a lot of stuff on amazon I'm honestly surprised is worth the space it takes up in their warehouses. And I have knowingly bought some low-quality stuff on amazon. But perhaps with the critical caveat of knowingly, I have yet to have a counterfeit foisted upon me.

> what is the consumer harm

Fires from bootleg phone chargers and the like. (Google for "phone charger fire" to see how often this happens.)

Explosions from bootleg batteries.

Sickness from bootleg water filters and food.

What if you bought CO/ALR receptacles to bring a home with Aluminum wiring up to code, but the terminals weren't made from Indium?

What if you bought a marine battery for your sump pump backup, but it failed to perform and/or failed to notify you of its impending death?

I can continue from here, but I think you get the point.

It might not also be immediately obvious also, a SanDisk SD card bought fulfilled by Amazon might be a fake and just write a bit slow or die after a year. How many people would notice a fake?