If your trading strategy involves opening many orders, the size of the spread is important.
If you are trading with large leverage, it will increase the broker's commission in addition to the open position size.

There are also some assets where the spread size may vary by several times between brokers, such as the same cryptocurrency or precious metal.

It is therefore not unnecessary to know in advance the spreads to be paid when trading a particular asset.

The value gained when opening a position can be determined in several ways by traders.