Let’s face it, gold makes the world (of Warcraft) go around. Okay, you could debate other aspects of the game as well, but the fact of the matter is you need gold at some point during the game.
You can farm mats, make items, find a disenchanter for all those “of the Platypus” items that no one in their right mind would use, or you can make life easy on yourself for 30-60 minutes a day. It’s as simple as the Auction House.
There are ample suggestions on how best to play the AH, including rolling a bank toon to save time. I’ll save my breath and your time because Google will land you tonnes of suggestions. You’ll also find ideas on addons and such (like Auctioneer…though I prefer AuctionLite myself). However, one of the simplest ways to make gold through the auction house requires nothing but simple math.
It amazes me how 10 Motes does not, in fact, equal 1 Primal on a financial scale. Same with Crystallized vs. Eternal, or even Essences and Dream Shards.
Buy `em, and flip `em. The whole process could take 5 minutes, twice a day. For 10 minutes out of your WoW time each day, wouldn’t it be worth the extra coin in your pocket? Better yours than someone else’s.