The spread for the MT5 financial account is variable. This means the spread is constantly changing, depending on the market conditions.
This was stated on our website Deriv MT5 | MetaTrader 5 trading platform | Deriv
You also may check the contract specification where it clearly states that the spread for XXXXXX is floating. Please follow the steps below to view the contract specification;
- log in to your MT5 account via PC or web terminal
- Right-click on a specific symbol (e.g XXXXXX)
- Click specification
- You will then see the contract specification
So your order will be executed the way it was described in the contract specifications.