I have never had a bit of trouble from Amazon. They are great about returns and all. Easy to contact.
Stay away from independent sellers on any site like ebay or amazon because they set their own terms.
It’s not about who’s more efficient. It’s about being herded into a sole source provider that’s become too powerful, and controlling too much of the economy, at the cost of smaller businesses. Their purchase of Whole Foods was an outright tragedy, and an example of what’s to come if people continue to use them for everything.