Typical Brokerage Professional Prop Firms

Does anyone know what are the typical brokerage fees a trader at a professional prop firm pays such as S0mmi from the thread "Australia vs. USA Bond spread"? I mean, at eurexchange.com everybody can read the transaction fee for one contract of Bund is €.20, but what is the additional clearing fee a prop firm charges to backed traders? Then I am especially interested in p/l firms, where the firm makes the money from the profit split, not from brokerage fees.