Where can I find the trading costs of a particular trade?

From your Trading Platform left click on any instrument on the Watchlist and from the Product Overview click on the "i".

Example from the Totality Edge:

Do you want to check the costs of trade already executed?

If you want to look at the costs applied to open trade, please read How to view position details?

For closed trades, they are visible the day after they have been closed:

From your Trading Platform "My Profile" > Account activity and reports > Transactions

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