Assuming a subscription fee of around £10 per month per clan, assuming half the clans would do this it would be enough for 2 servers(ish).
Hey - turns out IRC is out and something a little more modern has taken it's place... A little thing called Discord!
Join our community @ https://discord.gg/JuaSzXBZrk for a pick-up game, or just to rekindle with fellow community members.