$10/month for 5 users on IRC?
This service is very poorly branded. IRC is a protocol that is easy to set up, free, and low maintenance. Whatever value there is to outsourcing IRC server setup, it isn't $10/mo. But that isn't even what their main service is. Their platform is just built on IRC--their other features (Archiving, workflow integration, etc) are much much much more value-adding. Its like advertising heroku as "rails hosting, and more!". It doesn't point to the real value of the service.
I can get easy IRC hosting for much cheaper than $10/month. Don't charge someone $10/month for an IRC server. Charge them $10/month for a developer-oriented integrated messaging platform or something.