Yes, You can have as many "middlemen" selling products as you want. Usually not as many involved as in your question because the price goes up each time.
No. If you have a trading account then you can use that to directly buy or sell stocks.
Yes, you do need real estate training to become a broker. The real estate license for the broker could protect the consumer while they buy and sell their property.
Since almost all people need to carry a few different forms of insurance, there will always be a need for people to sell them insurance. For someone looking for a stable and potentially lucrative career, becoming an insurance broker could be a good option. In order to get a job as an insurance broker, you will need to have an broker license. Each state in which you sell insurance in, will have slightly different insurance tests. Since they can be complicated, you should plan on studying for each exam that you have to take. Once you have passed the test and obtained the broker's license, you will qualify to sell insurance legally.
The difference between a broker and jobbers is the role that they play in the buying and selling of stocks. A broker is hired by an investor to buy and sell stock for them. A jobber ensures that when the broker wants to buy or sell, that there is someone lined up for the broker to buy or sell from.
You are best advised to pay a certified gemologist to value the ring for you, before you attempt to sell it. You can sell it to a jeweler or a private party, or broker it to an online shopping option.
You can sell your gold earrings at a broker, a consignment store, online on Ebay or Etsy or try to sell them to a friend who is in need of some gold earrings.
If you have the certificates you need to take these to your bank manager or a stock broker and instruct them to sell the stocks for you (you cant do this yourself you have to go though a broker) - they will charge commission.
You need one to broker them - to arrange deals between sellers and buyers. Some commodities require their sellers to have licenses.
A broker is the person through whom we buy/sell stocks. For example your DEMAT Account provider can be considered your Broker.
Through a stock broker.
Depending which state you live in, most states let you sell three cars a year from private property with out permits or license.