These days WordPress developers are selling WordPress Themes and are earning a good sum out of it. The popularity of CMS is growing day by day and WordPress is powering almost 19% of most websites out there. Selling WordPress themes and plugins are becoming extremely profitable for that reason. There are some very profitable places where you can sell your themes and plugins.
ThemeForest is one of the most liked most popular WordPress themes market on the web and maybe one of the best places where you can sell your WordPress themes. The standards are quite high, so if your theme gets approved it is pretty much guaranteed that it might get sold due to the high traffic on this site. Newbies can keep 50% of the sales and a commission that could go up to 70% if you sell more.
CodeCanyon by Envato is a very good place to sell your WordPress plugins. Though Multipurpose WordPress Themes is smaller than Themeforest, it is a marketplace that is growing and a great place to sell your themes and Creative templates. Similar to Themeforest, it gives a new author 50% of the sales and 70% commission if you sell more. Mojo Code is another marketplace for Scripts and plugins.