Here's a real quick list of profitable alchemy crafts. Add yours!
Requires: 6 x or 12 x and 12 x
Requires: 3 x s and 10 , 10 x and 10 x . Great if you're planning to make some Vials. Remember you can buy Pyrite Ore instead of the bars, it's generally cheaper. My profit margin on these is 100%.
Requires: 1 x and 1 . Generally used for transmog now. Look for cheap arcane crystals when possible, they're harder to come by than ever before!
Requires: 8 x s. A home run thanks to the Toy Box. I've sold hundreds in the past couple weeks at 50-60g. I buy Saronite Ore at 1.6g or less, and turn a 100% profit.
Requires: and . Used mostly by dungeon challengers to skip trash.
Requires: and . Also used by dungeon challengers, has a few other niche applications.
Requires: 8 x , 4 x , 6 x and 4 x . Used by farmers to obtain treasure chests in Cataclysm zones. Expensive, but worthwhile. Make these on your potion master for the extra profits.
Requires: . Used by farmers to obtain treasure chests in MoP zones.
Requires: (BoP), 8 x (BoP), 8 x , 8 x , 8 x and 8 x . The cost of Flasks adds up quickly, so consider crafting these on an Elixir Master alchemist.
Did I miss any?