A free price system is a way for people to buy and sell goods or services without anyone telling them what price they should charge. Instead, the price of something is determined by how much someone is willing to pay for it and how much someone is willing to sell it for. This allows the market to decide how much something is worth. For example, if an apple is worth $1 in one store and $2 in another store, people can choose which store they want to buy from based on the price. People can also make deals with each other about prices so that everyone can get what they want.