[10] Despite the grounds raised, Mr Mbuzi's written and oral submissions in this appeal make it reasonably clear that this appeal essentially relates only to costs orders of Trial Division judges of the Supreme Court of Queensland, particularly Mullins J's costs orders of 31 March 2005 and Douglas J's costs orders of 18 December 2006. Under s 253 Supreme Court Act 1995 (Qld) no order made by a Supreme Court judge as to costs only, which by law are left to the discretion of the judge, shall be subject to any appeal except by leave of the judge making such order. The Mbuzis have not obtained the leave of Douglas J or, for that matter, Mullins J or Muir J to appeal any costs order. That may well have the effect that the Mbuzis' purported appeal to this Court is incompetent and should be struck out with costs: see MAM Mortgages Ltd (in liq) v Daskam Pty Ltd.[2] The present matter is an excellent example of the category of case that s 253 is intended to filter before reaching this Court.