Buying Surv and Killer DLC from the PS4 store but already owning one of them.

Gorik

So it's basically as the title suggests.

I already have the Survivor, Jonah in this instance who I bought with shards, but I want to know what will happen if I buy the Artists chapter on PS4 which would normally contain both.

Do I just get The Artists but at the price both of them would of cost me?