This is one of my secret tips that I haven't shared with anyone. It's transmuting and selling Primal Might, this is one of my favorite ways to make gold, I can turn 150-200g into an easy 400g whenever I want.
You'll need Burning Crusade materials to transmute this, namely primals. I can get all five primals for under 200g, and sometimes even less when I combine motes together to create one primal. Always check for the mote of said primal, who knows you might save yourself some gold.
If you're an engineer, try farming your own primal air in Nagrand with your Zapthrottle Mote Extractor. You can reduce costs by farming your own primal air greatly. It's simple & easy.
Primal Might is used in two main things:
- Used to craft [Runed Adamantite Rod]
- 4 Used in Alchemy Transmutation Quest
Furthermore, if you don't have the recipe go pick it up at Shattrah from Skreah, and be sure to snag a couple extra to list at the auction house to flip, extra gold never hurts!
So check the market out, especially if cataclysm alchemy isn't doing so well on your server.