Aberforth waited patiently, more or less ignoring all of Lockhart's dramatics until the pendant was back on the bar. He then poked at it with one long finger and nodded to himself with satisfaction. It helped him maintain his control since Lockhart clearly had no idea how to haggle. The first and most important factor of which was to not let the person you're haggling with know how much you wanted the item. Still it was always easier haggling with idiots than the sharpsters.
He arched an eyebrow at Lockhart's continued theatrics and kept his face impassive. "70 galleons," he said firmly.