After signing up, AddSearch provides you with a sample index. It allows for testing how AddSearch works but to subscribe to AddSearch you need to create an index.
The Essentials and Professional plans are available from the dashboard. If you want to subscribe to the Premium or Enterprise plan request a quote.
To subscribe to AddSearch, follow these instructions:
After selecting the subscription you will be taken to New subscription page where you can fill in your billing information and add the Added page quota add-on to your subscription. To subscribe click the Submit button.