The answer to this question is first of all related to your status. There is a big difference between being a boss and being a salesperson.

Second, what do you supply? Wires and cables are very different from instruments.

Third, what kind of money do you want to make? There are many differences between buying low and selling high and producing and selling by yourself.

To sum up briefly, if you have no idea at all, then it is best to find someone to guide you; if you can’t find one, it is recommended to try another way to make money.