Yes. The fees are set per market and every trader has to pay those. Commissions can range anywhere from 50 or 60 cents per contract (if anyone knows of any lower, feel free to chime in), so unless you're making at least 1/2 to 3/4 point on every trade, you're going to make your broker richer than you'll ever be!
Most traders overtrade - and every trader has done it at one time or another. This was a good day trading for me - this was July 8-9.
Contracts R/T: 60
CostOfTrades: $300.00
P/L Gross: $1,687.50
P/L Net: $1,387.50
Most of my trades were 5 or 10 contracts, and I probably overtraded! I lost a couple of trades, too, as you can see:
OrderType IsBuy Quantity FilledPrice FilledQuantity FilledTime P/L Gross
Limit S 10 2043 10 7/8/2015 16:14
Stop B 10 2043.5 10 7/8/2015 16:24 ($250.00)
Limit B 10 2044.25 10 7/8/2015 16:52
Limit S 10 2045.25 10 7/8/2015 17:03 $500.00
Limit B 10 2045 10 7/8/2015 17:10
Limit S 10 2046 10 7/8/2015 18:10 $500.00
Limit B 10 2051.75 10 7/8/2015 21:43
Limit S 10 2052.75 10 7/8/2015 22:34 $500.00
Limit B 5 2053 5 7/8/2015 23:05
Limit S 5 2052 5 7/8/2015 23:30 ($250.00)
Limit S 5 2049.75 5 7/8/2015 23:43
Market B 10 2051 10 7/8/2015 23:46
Limit S 5 2053 5 7/8/2015 23:52 $187.50
Market S 5 2046 5 7/9/2015 12:58
Limit B 5 2044 5 7/9/2015 12:59 $500.00
As you can see, I paid about $300 in commissions and fees (my broker charges just under $5/contract, round trip, and I just averaged it up to $5).