Where are the merchants?

[unsaved]

After completing the very first quest, I am told to get stuff from the remaining merchants. I have looked through the camp, and all I find are refugees who I can't interact with; quest-givers; and a skill-trainer. How do I identify merchants, and where are they?

[Imonfire915]

At the guy who gives you gas pumb quest, and also the girl who makes potions (who asked you red mushoom to heal Morka) will buy your stuff