Yeah.. odds are right now only about 50% of the online community would use the server... But that's still around 50 people.
I would be more than willing to donate my real life funds for a community teamspeak server, however that would require in-game compensation either from the admin staffs infinite pockets or player donations.
Through total web HQ, a 50 slot teamspeak server would cost $14/month.. $108 for an entire year up front.