Commission-only advisors (i.e., stockbrokers) are paid only when they make a sale. Any actual financial advice that they give is incidental to the sale of the product. Commission-only advisors are held to the suitable standard, which means the products they recommend must simply be generally reasonable for the client and situation. They are not required to disclose the amounts of their commissions to their clients, nor are they required to disclose conflicts of interest that may influence a client’s ultimate decisions.
This means commission-only advisors can sell products that may be best for them, not for you.