its FREE.. definately FREE, i mean, it didn't ask for a credit card or anything, and i know about 25 people playing it... because its free.
Do NOT expect to get the download off of the official site, there are so many people trying to get it that its near impossible. And even when you do, the speed is horrendous (friends normal 100kb/s connection was down to 15)
there are many more sites you can find it at, i don't know them by heart, but i know if you search you will find. Its a HUGE download, at 600 megs.
(I got mine direct connect through a friend)
Its a great game, and I'm enjoying it more and more the longer i play, it does have some major lag issues (espicially in prontera) but, it seems to depend on what the server wants, not the amount of people on O_o;