If I take the loan you suggest directly to that bank can they get me a better deal than you?
Going straight to your bank means that you'll be choosing from a smaller pool of home loan options than you'd get using an expert Aussie Broker. In fact on occasion banks and lending institutions provide discounted home loan rates to mortgage brokers such as Aussie, that they don't make available in their branches.
And obviously your bank won't tell you if one of its competitors has a better product ? but we will.