Actually, now that I look at it again, there appears to be NO break even point, if by that, you mean when the total costs of trading per month equal one another. As I calculate it, excluding the small exchange fees, your total cost is lower with JPR from the first trade. Silly that I never took the time to calculate it.
At one trade, MBT is $322.95, while JPR is $260.00. They get to within about $90.00 at the 20 trade level, but then begin to widen again from there. Even at 50 trades and above, when you have traded out of the MBT fee, JPR has a advantage of around $300.00.
You're right about the difference at 200 trades, too. ($3790 vs $2250) And, at 400 trades, (not hard to do if doing full-time daytrading) when you have traded out of JPR's fee, the difference is HUGE ($7580 vs $4000).
Obviously, commissions aren't the full story, as there ARE intangibles, like support, reliability, etc. This was just an interesting exercise for anal retentives like me.<g>
Len |