Need help from experienced LWsFollow

So, my roommate is a 300 armorsmith and is making boatloads of money by selling the whitesoul helm on the AH. The profit margin is just through the roof. My question is, what items are similar for a leatherworker? I'm lvl 300 elemental and I'm looking for something that is reasonably profitable/in demand on the AH. Thanks in advance for your help.