In order to receive updates and support for your Plugin, we require an annual fee. We do this for a reason. Many plugins and themes have a one time lifetime fee. Usually, these products tend to die out as it becomes a financial burden on the company to maintain them. In order to prevent our plugins from becoming one of those tired old products that is just a burden on the company, we adopted an annual maintenance fee to help keep it financially viable over the long term and therefore keeping it worthwhile to maintain it.