Hello guys I'm a beginner in this server stuff and I'm trying to put a store npc like the Ragnarok Online Brazil, it works like a store npc but using items from instances / quests so you can buy other items see the example in the image.
As I said I am a beginner in these things, maybe there is already something like this and I have not found, if I am in the wrong place in the forum please put me in the right place, thank you, and I apologize for my English, I have not practiced much, I speak Portuguese.