There are a lot of new things that are going to come out with The Burning Crusade, especially new trade goods. It is said that you have to lvl your skill up to use the new goods. Since most of your recipies are yellow at lvl 300 you'll need a lot of goods to lvl the skill up. Here are many of the things that you should stock up. Runecloth. Runecloth is obviously a great thing to farm because it drops a lot. Also they are used aegwynn alliance gold for both First Aid and Tailoring. It is also rumored that you need truckloads of Runecloth to hit the next cloth to use the next kind of cloth which is called Netherweave Cloth. Tailors also use Primal Mooncloth and Bolt of Soulcloth. Rugged Leather is also a great thing because before Leatherworkers can make anything with the new leather called Knothide Leather and Heavy Knothide Leather. You start using Knothide Leather at level 320 Leatherworking. You should save up your Thorium Bars. Thorium can get quite expensive so It's not the main thing you should save up. Blacksmiths will also need Enchanted Thorium Bars because that is another thing that they will need for aegwynn alliance us gold the expansion until around 315 when they can use Fel Iron. The same applies for the Engineers. Jewelcrafting is using an enormous ammount of the jewels already in the game so get ready to horde them for all the rich people who want to power level Jewcrafting.