NinjaTrader offers low fees for high-volume traders that can afford the monthly or lifetime subscription, which is $99 per month or $1,499. Commissions then come in as low as $0.09 per micro contract.  However, traders should also note the additional fees in the form of add-ons, platform charges, inactivity penalties, and withdrawal fees. Forex brokers that integrate the NinjaTrader software may also have their own pricing structures.