The answer is barter system. A barter system is an old technique of exchange. This scheme has stood used for centuries and long before money was created. People swapped services and goods for other services and goods in return. Nowadays, bartering has made a comeback using methods that are classier to aid in trading which is for example the Internet. In ancient times, this system involved people in the same area, however today bartering is worldwide. The worth of bartering items can be discussed with the other party. Trading does not include money which is one of the benefits. You can buy items by exchanging an item you have but no longer want or need. Largely, trading in this way is done over Online sales and exchange shops.