Selling on Amazon in 2014 was a piece of cake, it was the easiest thing to do. Then saturation settled in and it became so difficult. Many lost money and closed shop because of this. But about 3 or so years ago, there was a new boom as innovative people began to look for ways to cooperate with Amazon and make money from it. Now there are a few selling models that are booming again. Those who know what to do are building some great businesses. That is where I am today, not easy but perfectly doable if you know what you are doing.