Yes! Gamers.IRC itself is free of charge. We work on it in our spare time, we don’t make money with it. Anyway, we would appreciate any donations.
But: Gamers.IRC is actually only a (very huge) script for mIRC. Gamers.IRC is using mIRC as its base and won’t work without it. mIRC is – unlike the Gamers.IRC script – shareware. In this case it means that mIRC will remind you after a period of 30 days that you are urged to pay 20 US-$ if you still want to use mIRC. However, these 20 US-$ are not related to the Gamers.IRC team in any way but will be spent directly to mIRC’s developer, Khaled Mardam-Bey. As we don’t see a cent of these 20 US-$, we don’t care if you register mIRC or not, as we can’t take advantage of it.