A buyer at Best Buy or Costco explicitly made a decision to stock the item at the store/warehouse, where shelf space is not free. If that item has a lot of returns or complaints, the store will stop selling the product. It takes up space where a better product could be, and returns waste the time of employees.
Amazon doesn't have these controls. Listing an item on Amazon is cheap and Amazon has no incentive to prune their marketplace of junk. The only controls on Amazon are user reviews which can be gamed.
Also they're typically right on par with Amazon's pricing and no need to wait for it to ship, just a quick trip there and back (although they usually get me buying something I didn't go there for) >:(
Me too but I enjoy browsing through the store so it’s (sometimes not so much) cheap entertainment.
Of course, that eliminates 90% of their "inventory", but I only ever wanted to buy computer products from them anyway.