Agree with White Privilege...not too sure of the entire question but yes...per side means 1.25 to enter the trade...1.25 to exit the trade for a total round-turn commission of $2.50.
I think the Euro, though, is 6.25 per tick as the smallest increment but...if you make money you subtract the commision to get your net gain. If you lose money you add the commission to get you net loss.
ie...you make a trade and gain say...100 bucks...you have to subtract the 2.50 round-turn from the 100 to get a 97.50 net gain. If you lose 100 bucks on the trade you add the 2.50 round-turn commission to get a net loss of 102.50.
Is that what you were asking?
That's a cheap commission rate. I pay 4.65 round-turn or thereabouts.
Are you fixin to come back in here with an advertisement for those rates?