online brokers and brokerage fees

Does anyone know who are the cheapest online brokers.

I was with Commsec and they were charging me $19.95 until today. They have now upped it to $29.95.

I'm peeved about this and am wanting to know if I can get the $19.95 rate with another broker without having to set up another account.

In other words, is there another online broker who is offering $19.95 (or less) brokerage rates and happy to take funds from my current account.

Any info about this would be appreciated.