If I remember correctly it is F2P upon release/OBT but if you want in now, you will either need a Beta key, Founder Pack, or wait until Open beta which will be shorter than Founder Open beta as it will count as a soft release. There is of course a Premium membership option as well that will give you some more things here and there similar to how TERA membership is setup.
People who want to play now but not invest in a founders pack can get into the Ru OBT. In fact, for those (like me) who want to keep playing after CBT2 ends tomorrow, Ru OBT will be the only way we can until NA/EU CBT3 starts... hopefully soon.
