The merchant profession in "Dragon Quest 3: HD-2D Remastered Edition" is a relatively special profession in the game, and this profession also has many important attributes. The first is strength, because the basic attributes of merchants are not particularly high. , so you need to start by increasing the base attributes to make them useful in combat.
What attributes are important for the merchant profession in Dragon Quest 3 Remake
Merchants are not particularly valuable in combat. They don't have particularly powerful abilities, but they still have value as they provide you with quite a bit of extra gold at the end of the battle.
This means that merchants will mainly be used for monster farming, but if you train them properly, they won't be a burden.