I don't find returns to be helpful at all.

- If I buy medicine, and it's fake, that's a serious problem.

- If I buy a bottle of vanilla, and it's tainted, that's a serious problem.

- If I buy a piece of electronics, and it's a piece which was returned for working intermittently, that's a problem too.

- If I buy clothing from brands I trust, and I get a knock-off which falls apart in 6 months, that's a problem.

Unless Amazon can get supply chain issues under control, it's too risky to buy most of the stuff I used to buy there. I find eBay and Aliexpress to be more reliable, probably due to reviews sticking to sellers.

I think it's a matter of time before someone starts selling ransomware on Amazon. You plug in a device, and your computer is compromised. The device is a buck cheaper.