The commission earned by broker employees varies quite a bit based
on the type of services provided by the brokerage. There are two
general categories of brokerages: full-service and discount.
Full-service brokers offer investment advice, helping the customer
figure out what to trade and when. They also provide a host of
other services (see the article listed below for more details).
These full-service brokers can charge $100+ per trade.
Discount brokers offer fewer services. Depending on the amount of
support provided, prices range from $5 to $30 per trade. Note,
however, that the brokers are actually paid salary, not
Investopedia.com has an excellent article on the subject, and was
the source of the above information. Here is the link to the
In particular, check out the page on the costs involved in hiring
And also the page on types of brokers:
Investopedia.com -- The Investing Education Site
The Open Directory has a list of brokerage firms including
full-service, discount, and online.
Google search: "stock broker" commission
Dmoz.org search: stock broker
I hope you find this information useful,