You can change your Class once for Free when you reach lv60, after that you have to use Gold(Real Money) to do it ^^.

Its actually forever free, depends how impatience you are. :P
Since when you switch a class, you get a Cooldown timer on it.
so long the CD is there, if you want to change class then, then its gonna cost real money,
but if you wait for the CD to finish, then you will have a free switch again.

& yes, this is a perm. feature.
at 60, you can only pick 1 class you want to switch to.
But as you level up, you will unlock more slots.
http://i.imgur.com/NtRZ9wp.png

aha it make me play game more fun
thanks Schnee and Myst
:D

hoping to understand game mechanics :D

Np's, I'll help if I can :P

So is there a list, of what classes can I switch to from which?:o

You can switch to any class from the class you picked in the start, but once you switch to the new class.
You need to level up, to unlock other classes to switch to.

Like example: you're Fire in the start, then at 60 you want to switch to Wind.
now you can be Fire or Wind so long you have that free try or with gold.
like if you want to be Lightning,Earth or Water, you need to wait for the new class slot unlock at lvl 66.

Ohhhhh, I see, thanks alot for a swift response Myst^^

Myst, may i ask how long is the CD? :)