30 trades per quarter. The next step up costs $9.99 per trade for balances of more than $501000 or between 30 and 149 trades per quarter. The third tier, which is $7.99 per trade, is for balances above $50,000 and trades of 150-1499 per quarter. The fourth tier is for balances of more than $50,000 and Hades in excess of 1500 per quarter, and costs investors just $6.99 per trade. E*Trades offerings seern best suited to the day trader who makes a lot of trades and may hold a large balance