|Appears in||The Way of Kings, Words of Radiance|
Vstim is a Thaylen merchant and babsk to Rysn. He is known for being able to deal with the Shin people, from whom he is able to get a good deal, unlike many other merchants. He has a knack for understanding the needs of other cultures and what makes a good return on an investment, making him a successful trader. 
In 1166, Vstim had been the one to obtain Szeth from a local Shin farmer and trader, Thresh-son-Esan. He later traded Szeth for a large profit, but regretted doing so as Szeth was a good servant. Over the years, Vstim continued to trade with Thresh; in one of his travels seven years later, he was accompanied by his new apprentice Rysn.
The next year, Vstim and Rysn were in the Reshi Isles trading with the inhabitants of a Tai-na called Relu-na. Vstim feigned sickness to give Rysn trading practice with real stakes; however, Rysn managed to fall off of Relu-na's head, and for her albeit stupid boldness and bravery, is given a live larkin by the Tai-na. Vstim receives his original trade - which had been set up years before - of a dead larkin.