Every time a new World of Warcraft expansion comes out, no matter how much gold we had, it just vanishes overnight. New crafted armour, mounts, pets, rare toys, all waiting to be purchased. Well, there's a simple trick to earn a bit more that involves running three particular old raids.
As you can see in Bellular Gaming's video, the raids you should do are Blackwing Descent, Firelands and Bastion of Twilight, all from the Cataclysm era of WoW, since these three are pretty much soloable with every class at level 100. They are full of gold -- around 4,000 gold to be exact -- with everything collected and sold to vendors.
The weekly lockout will of course keep you from doing the runs repeatedly, but you can do them with other max level characters too. So if you have three, for example, that means an extra 12k gold every week. Now that's really efficient.
Here's the clip, with details on how much time it takes and how much gold we can exactly earn:
WoD 6.0 Gold Farming - No AH/Professions [YouTube]