Hi

Any other cost that you have?

Regarding any other cost.

The main service, backlink monitoring, indexing & google indexing is included in the lifetime deal as per the plan details mentioned above.

You will have to provide API keys for Google Indexing which is free of cost from google till a monthly limit.

We have another functionality to discover backlinks to your site, this feature is given as a way to reduce your time to add details to monitor your backlinks.
You can avail this functionality by adding your MOZ API key or buy our Link Discovery AddOn separately as informed earlier on this page.

I hope I was able to solve your queries.

Thanks,
Yogi