Hello, I have few very good keywords. By Moz Keyword Difficulty I got 30%-50% but when I search for that keyword first results are: 1. Product company 2. Google Images 3. Ebay 4. Amazon 5. Newegg 6 and etc. some shops who sell similar products I am going to write a reviews for that(those) products and wondering how much hard will be to outrank shops with no or very small description (review for product).