I have been trying to ask in /2 but people aren't very helpful so I thought I would come to my favourite place :P

I am level 68 on 5 characters.

I want to add Alchemy to these five characters. Do you think it is worth it now? Or should I wait until after Cataclysm. I want to farm their CDs up until Cataclysm. Is this wise? Is it possible or have all of the CDs that make any profit been removed in the patch.

What can I transmute exactly, and how much do you think it would cost to train up my skill to the required transmuation level. Finally, how does profession levels work. Is it 5 levels per level you have?

So that means at level 68 I can only craft items under 68 * 5 = 340.

Is that correct?

Sorry for so many questions.