Here is how to purchase a Keywords Everywhere subscription

Install Keywords Everywhere
1

Install the Chrome extension or Firefox add-on

Before you can buy credits, you need to have installed the Keywords Everywhere Chrome extension or Firefox add-on

Setup API Key
2

Setup the API Key

Once the extension/add-on has been installed, you need to sign up for an API key and set it up.

View purchase link
3

Click the "K" icon at the top right of your browser

In the popup that opens, at the bottom, you will find the link to purchase a subscription. Clicking this link will take you to the pricing page where you can choose the plan you want to buy.