If you are having trouble with stocking NW Cloth or just wanna make a quick buck head out to the Hellfire Peninsula side of the Dark Portal. All of the temporary mobs at the Glacial Templar summoning stone can drop NW Cloth and have a nice respawn timer, while being grouped together, for easy farming. Use an alt, get your 60mins 10% Kill XP Buff , then farm away. Bonus when your Faction Fire burns hot! Take advantage before they are gone.