The combat is similar to WoW but with the class system you can technically switch from a DPS to tank, or a ranged DPS to a healer (you can do healer to tank as well but logically doesn't make much sense). Also the GCD is higher at 2.5sec rather than the 1.7 that it is for WoW so actions are a little bit more strategic and the combat seems slower. Very reminiscent of Final Fantasy XIII and IX.
Subscription I think is just the general 15/month. Quick tip though when you register for an account list your account in the US rather than Oceanic or Australia because you end up paying the subscription in Euros. That's what happened to me.
Overall if your a fan of MMO's and can handle the server capacity issues. Well worth your money!
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