In the case of individual trading, Coinbase charges the greater of either a flat fee that depends on the amount being traded or a variable fee that depends on the amount, user location and payment method. Even Yahoo was hacked and information on 1 billion accounts was stolen. Many exchanges are simply trying to steal your personal information like your password. Fees decrease with the increase in amount and frequency of trades. Some require verification, although most don’t. Apart from the price of bitcoin itself, each cryptocurrency exchange adds a fee for trading, i.