Commissions to Profits Ratio

What would be a good commission to profits ratio that one should realistically shoot for when day-trading, irrelevant of the product. Is a 10-15% of profits paid to the broker a good or bad ratio?

 

Anything less than a gazillion to one would demonstrate inadequacy.

 

as long as you are making a profit it should not be an issue.
unless you can make your trading method leaner and meaner