[Selzar]

x.x
I ment OUTSIDE not INSIDE Actual STORES.

There would be like an NPC outside of town,I heard some one talk about scurvy merchants well one would be outside.
And only monsters would be able to kill it. The NPC would sell something good or something not so good.
So if you wanna keep that good item selling. You must protect the scurvy merchant from death. Also the merchant attacks for his life too. If the merchant dies. He or She will spawn in a different area in the town with possibly a new look and a new item.