I thougth of this.
WotLK is out in November the 13th.
When everyone gets the new Death Knight and goes for Profession, they goes OMG I HATE FARMING!
Then they go raid the auction for materials.
The thing i say here, is to get gold quick - by farm the basic things.
Copper is like 2gold per stack, but in the WotLK release, MAYBE up to 20G!
If you dont like farming, do the risky part of BUYING the basic materials and sell for like 10-20 times higher price in WotLK.
They who are rich and dont want to waste time on farming, uses the auction.
There you go, quick money...
What can go 10-20 times higher price Easily : Any 1-60 materials.
What is basic materials? Mostly 1-30.
Copper, Tin, Peacebloom, Earthroot, Leather, etc.
Tried my best explaining, and that i only wish to help.
Hate farming and need mining/skin/herb levels? Get a old char with a farm profession and go farm WHILE leveling the profession.
Calculated : Have 100 stacks of copper for 2 gold per stack = 200gold.
Sell it for 10-20 times more = 2k-4k gold!
If you have 20000g, and is risky, to get materials to sell for 200K, its not my faulth you might fail... I say its RISKY to buy materials and sell.
Sorry if i had problems with the math, but i wrote in the night.