Maybe he considers his subscribers as family :^) Man, I’m really happy I have cancelled my prime and have non-amazon options for online shopping.
You do still have to watch out for marketplace items on some of them. And if it really IS direct-from-China why not go to eBay or Alibaba?
AliExpress does manage to have a search feature that is massively worse than Amazon's, if you can believe that possible.
However, I think the last purchase I made through Amazon was super specific (particular model of washing machine agitator motor) and unlikely to be glump-binned. So perhaps that's the approach.
The things in the middle are the problem.