You can have more difficult quests and gain more gold after you have finished

Repeatable quests – Aldor: An essential part of raising your reputation to high levels is by completing the repeatable reputation quest. For the Aldor, you can turn in Marks of Kil’jaeden and Marks of Sargeras, which drop blade soul gold from members of the Burning Legion in Outland.

Marks of Kil’jaeden, which are found in Terokkar Forest and Nagrand, can be turned in until Honored reputation. Marks of Sargeras, which are found from higher-level members of the Burning Legion, can be turned in until exalted.

They can be found in high-level regions such as Nether-storm, Shadow-moon Valley, and Blade’s Edge Mountains as well as in the instances of Shadow Labyrinth, Arcatraz, and the Mechanar.

If you are high-level characters, you can have more difficult quests and gain more WoW gold after you have finished them. In these locations you can also collect Fel Armaments, which can be turned in for reputation as well as for Holy Dust, used to buy the Aldor shoulder enchants.

In the latter zone you will find a town for each faction, each with its own quest givers, vendors, and even a flight-point. Just be sure not to wander into the opposing faction’s town by mistake – you will likely not receive a warm welcome.