First, a small commission fee is applied to every transaction. This charge varies depending on the volume of the transaction and starts at $3 per lot. Each trade also has a little spread. The difference between the buying and selling prices of a currency pair is known as the spread, and it initially starts at only 0.0 pips. The costs associated with opening an ECN account with IC Markets are frequently lower than those of other online brokers. This topic is explored in more detail on the website 
https://tradersunion.com/brokers/forex/view/ic_markets/is-lc-markets-an-ecn-broker/ I found.