Be that as it may, the inquiry into what amounts to be grossly excessive or unreasonable costs would ordinarily involve, firstly, a determination of what, in the particular circumstances, would be a reasonable sum to charge. The resolution of that question would often turn on multiple factors, including the amount at which the costs in question was or would likely be taxed, the difficulty of the case, the novelty or complexity of the legal issues presented, the experience of the practitioner, the quality of his or her work, the amount of time spent by the practitioner on the matter, the responsibility involved, the amount or value of the subject matter in issue, and any costs agreement that might have been entered into. (see: D’Alessandro v Legal Practitioners Complaints Committee [1995] 15 WAR 198) 31