Commissions & Fees

Minimum $2k to open account.

Trade commission-free for 60 days
http://ameritrade.com/specialoffer.html

No monthly maintenance fees.
$ 0.015 per unit - $5 minumum (~333 units).

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Commission schedule.
Trade Unlimited Shares (market or limit) - $9.99 per trade.
http://www.tdameritrade.com/pricing.html

Margin Rates, etc.
http://www.tdameritrade.com/ratesfees.html