Functioning of the bitcoin market is similar to functioning of the market of some goods (coffee, gold, etc.), which is brewed/produced and sold on the markets, its price fluctuates depending on supply and demand.
Where do you trade bitcoin?
It is easier for us, not the miners, to get Bitcoin now than it was a year ago. All you have to do now is to be in the right country to buy and sell Bitcoins, where exchanges legally act as intermediaries for currency trading – something that also protects your funds from mismanagement and from external and internal attacks. These exchanges instantly convert your Bitcoin into USD or another currency, and based on the price fluctuations between these two currencies, you can simultaneously sell and buy their assets and make good profits – a process we know as arbitrage.