Someone is selling your product on Amazon if you are not
There are some people who develop products that have patents. These products are copyright protected. The best thing you can do is to be able to sell the product online through your store. However, you should note that if you are not selling your product on Amazon someone else is. There is nothing as boring as having someone make a profit out of your hard work. The problem with Amazon is that they do not check to find out if the product being sold by the seller is copyright protected.
Someone is selling your product on Amazon after buying from you
It is not every time that the Amazon seller has violated copyright laws. Sometimes they simply buy the product from you and sell it at a higher price on Amazon. Since the product is unique and no one is able to copy the product. An Amazon seller can simply buy from you and sell on Amazon. I once had a similar problem. I had created a product called a rubble scrub. It was a tool which was very good at washing pots and pans. One day a friend of mine came to me telling me that there was someone who was selling the exact product on Amazon. I was shocked because the product was unique. I then opened Amazon website and searched for the product. To my surprise, my friend was right my product was being sold on Amazon for a higher price. I purchased the product on Amazon. To my disappointment, the seller had actually bought the product from me.
Someone is selling your product on Amazon through dropshipping
In some scenarios, Amazon sellers take advantage of the fact that you are not selling your product on Amazon to start dropshipping your product. This means that they are able to sell the product without having it in the stock.