I ordered 4mm ball end hex wrenches from Amazon a while back; they are usually rather expensive for a simple piece of metal. I got one hex wrench in the pack instead of the product description of five. My review included the word fraud in it. Amazon removed my product review but admitted they knew that item was not accurately described. A re-worded review was accepted; 1 star. I did get a refund.
A closer look at the reviews in the past would have revealed this problem.