And Costco
Amazon has clearly opted to go with the value extraction model. They're the polar opposite of Costco. For me, Amazon's retail image is now of a vendor whose goal is to make a commission, while shifting all liability to other unknown vendors. I have no idea what I'm getting at Amazon.
On the other hand, at Costco, I know there's an organization that will stand behind the products it sells, even if they aren't the manufacturer, and they take care of their employees, so I feel more confident the employees are more invested into the products as well.
When Amazon opened up to third party sellers, the floodgates opened. For many products it feels like buying from Aliexpress but with faster shipping and higher prices.
Don't get their bananas, though, they go from green to brown, completely bypassing yellow. I'm pretty sure that they are getting too cold at some point in the supply chain.
The same goes for their avocados. I'm not sure what the problem is, but they're pretty lousy in my experience. Trader Joe's seems to have the best deal on these that I've found, and they seem to last a long time too.