But for companies that need large quantities of oil often, such as airlines, to offset volatility, they enter into futures agreements at a set price. When it comes to trading fees, it is worth noting that most exchanges employ a maker-taker model. That is why using a time-tested solution often is the preferred choice. All you have to do is link a preferred payment method, such as a bank account, a PayPal or else, that you can use for fiat funding and withdrawals. The platform lists the majority of the Ethereum-based tokens at no cost. Similar to traditional stock exchanges, centralized cryptocurrency exchanges connect buyers and sellers and allow them to trade coins for fiat money or other cryptocurrencies.