4th character AC price?

I'm not sure about making a 4th character until i have confirmed it so can someone help me understand also i haven't made third yet that's why I'm asking.

Just so you know, when you delete your 4th character, you won't be able to create again unless you buy the 4th character again. According to another thread stating you aren't actually buying a "slot," rather, you're buying the right to use a new character.

I meant the price in AC, how much?

It costs 500AC.