I'm posting an anti guide to levelling your proffessions
This is common sense!
If you have rerolls who are 350 in a proffession and don't really need to skillup to 375 crafting right now, you don't need to spend huge amounts of money
When WotLK comes out, the starting green recipes will be 350+, and skillup points will cost next to nothing at that time.
Plus some interesting recipes are only 350 for now.
Money saved now, money saved later.