Stu_Ungar said:
Nor do you pay commissions fees as high as poker rake.
This totally depends on the type of trading you do. If you make many trades during a day and are scalping for short term gains you are going to pay a lot more in commissions than if you make few trade and are going for the long pull.
Commissions are basically one tick (one point on the DOW) per round-trip. So if you buy one DOW mini contract the profit is $5 per tick, the cost of buying and selling that contract (what it takes to complete the trade) is going to be about $5.
So basically in order to break even you have to make an average of 1 tick for every trade you make (not counting other business expenses).
If you are scalping for 4 ticks per contract, your commissions are costing you 25% of your profits. It's easier to get 4 ticks than 10, so scalping smaller and smaller is temptng. But eventually you reach the point of diminishing returns with a few stops out (your stops with these types of trade ahave to be bigger than your targets, i.e. you are risking more per trade than you hope to gain) that it becomes unprofitable.
Now if you make few trades per day and go for the long pull, commissions will be much less a percentage of your winnings, but they will still figure in.
Microstakes = 7.5BB/100. Sorry, I don't understand this notation. Could you expand?