For leave to appeal to be granted, the applicant must satisfy the cumulative test from Pichanick NO v Paterson: reasonable prospects of success, amount in dispute not trifling, substantial importance to parties, and favorable balance of convenience. Grounds of appeal must comply with Supreme Court Rules by being clear and concise - grounds that are convoluted, repetitive, and argumentative are invalid, and invalid grounds speak to lack of prospects of success. The assessment of whether an amount is trifling or a matter is important is based on objective parameters, not the subjective value to the claimant. There is nothing irregular in a court reserving judgment on a preliminary objection and disposing of it together with the merits. Balance of convenience includes consideration of the convenience of the courts and the administration of justice generally, not just the parties, and encompasses the principle of finality in litigation.