Market makers customarily offer you their own costs, based totally on the price that they expect to get on the ECN. When you open a deal they need to match it in the ECN to cover their risk. Obviously here there is room for the price to switch in the instant between you clicking the button and the deal going on to the ECN. This is slippage. It can mean that you don’t get the price that you are expecting, which can be an issue, especially for scalpers who are generally hunting for tiny profits from each trade. For that reason scalpers and market makers are not a good mix and might be unwelcome.
On the positive side, market makers can be a good choice for an amateur. They will sometimes provide good technical analysis, stories alerts, a user friendly platform and a demo account. They will nearly always offer a mini foreign exchange trading account so that you can start trading with a few hundred bucks or less. This is a really vital factor for many new traders selecting forex brokers.