$99/yr is insane for this. Here's the reasoning they provide in their FAQ:
> Internet service providers normally don’t provide their customers with networking capabilities that are required to run an email server. In most cases, upgrading to an expensive business class internet service is needed. The subscription service that is part of the Helm service handles this for you without you having to upgrade your ISP.
> We handle all fees associated with domain registration and renewal when you create a new domain for your Helm. In addition, we also provide storage for offsite encrypted backups and include access to new features, service and security patches.
> Internet service providers normally don’t provide their customers with networking capabilities that are required to run an email server. In most cases, upgrading to an expensive business class internet service is needed. The subscription service that is part of the Helm service handles this for you without you having to upgrade your ISP.
> We handle all fees associated with domain registration and renewal when you create a new domain for your Helm. In addition, we also provide storage for offsite encrypted backups and include access to new features, service and security patches.