With each trade placed through MarketDelta Desktop there is a $0.25 / filled contract order routing fee. This appears on your trading statement each day and some FCM's just bundle it into their fee structure.
These order routing fees are capped at $396 per month. So if you trade more than 792 round turns a month, you cap out and incur no further order routing fees. Traders who trade above 792 round turns per month will effectively lower their total round turn cost using MarketDelta because the order routing fee stops after capping out.
This fee only applies to live trades. Sim trades don't count.