Market Affinity is not defined by the game itself, but it is a very simple concept. Increasing your market affinity has two effects:
- Customers who come in to buy an item will offer you more money.
- Customers who come in to sell an item will demand less money. (note by doenen: many observations have been made that increasing Mercantile actually makes sellers ask for MORE money, not less.)
There are three known ways to increase your market affinity:
- You can upgrade your Mercantile skill.
- You can improve your front desk.
- You also get a temporary boost in market affinity from finishing some quests, such as Thieves and beggars.