WOW Gold: There is a way to pay for money to change your class in game
Dual-Classing, Damage formulations, Critical, ETC: Instead of just picking a level 30 class of your primary classes’ type, you can choose another one. This isn't limited to what your starting class is; you can pick WOW Gold any one of them. Advantages:
You are able to use more skill tiers. Say you're a warrior class and you cross to a spiritualist one, then you'll be able to use a higher tier of magic. This'll can be useful for debuffing, having a snare. You will not get the 2nd classes skills, just more tiers and PT bonus. Disadvantages:
You won't get benefits from your level 30 crossed classes’ special skills, or level 40 crossed classes’ special skills.
And yes, you do get the pt bonuses. I'm not sure if you can use the tier 3's, or just tier2's.
Though, there is a way to pay for money to change your class, which I believe is a bit of an exploit since you can use a really beneficial secondary then get rid of it once you're level 40.
You can also dual class, being two classes. At least I think, don't take that to the grave, it's just something believe was added in the summer update.
So with cross classing you get more classes tiers, but not the special skills.
