I made a TON of money with JC in wotlk (probably close to 300k over the entire expansion without buying ore or insane farming). But I have been highly disappointed with the market this expansion. On my realm almost every cut can sell for as low as 9-10 gold (even good ones that are used a lot for pve and pvp gear like purified, reckless etc). I decided to not even bother spending jcing tokens on patterns any more. I bought about 10 blue patterns that I use myself as caster and my bf uses as pally tank and started just collecting them for the future. I am now sitting on more than 100 tokens, hoping I will be able to buy epic gem patterns when they finally add them. My main money maker this expansion has been alchemy, selling flasks, transmuting truegolds/volatiles and selling fun items. Engineering is still shit for money making but I knew that already so no surprise in Cata either.