Quote from Mononoke:
I also part of the reasons they can maintain that level of transaction costs, is because there is money to be made at that level. otherwise, transaction costs would drop dramatically. Brokers simply want more trade, for them there is virtually no cost involved with adding an extra customer. Why would they maintain this price if their is no customer base for them?
That there is money to be made by the brokers does not mean there is money to be made by the traders. In the US I've heard that brokers make significant profits from new traders who proceed to lose most or all of their captical. Repeated over and over with new traders this can generate a lot of profit for the brokers. The old sayings "There's a sucker born every minute" and "Where are the Customers Yachts?" come to mind.
Higher transactions costs, whether through fee's or commissions lower the edge on day trading and those looking to survive will look to trade longer term time frames out of necessity. Since you seem intent on going forward I wish you luck, but be advised that maintaining or growing your capital in trading has very little to do with luck and very much to do with an effective and disciplined strategy (with expected returns high enough to overcome costs).