Extended private licenses aren't for sale, yet. It is planned to make them available by version 1.0 or shortly after. If you host a large community, feel free to send a mod a short introduction about your community and explain why you would need a license and with what quantity of instances and we'll look into it. No promises, though.
Before you Contact any Team Member read first:
Commercial licenses / hosting licenses require special agreements and are only available to selected hosting companies. However, without such a license, hosting the SinusBot in any commercial way is not allowed.