You can create a stall in any town just about anywhere lol. Doesn't matter where as people use the stall search feature now and don't have to run around looking in every stall.
Best luck selling in Hotan or Dwang.. I personally don't know about the euro towns as I don't go there much myself

Also a friend of mine used to post some really good element price lists for Pacific server, but not sure that would help you. If you're interested let me know and I can contact him ^^