Ok. most of you have experimented in the crafting instances a little....
Right when you walk in you'll notice a wholesaler giving out tasks (quests). Basscially he/she will ask you to go out and gather 15 raw tin (for example).
Get the quest then run down to the bottom of the crafting instance. At the bottom you'll find the broker. Use the broker to search for the raw tin (avg price 6cp). Buy 15 units of raw tin and return it to the broker for your reward. Whalla your quest is done! You just got 4silver for it.
Now the wholesaler gives you diff tasks based on your level. If you lvl 9 and under you'll get Tier 1 resource requests... (like tin) If you lvl 10-19 then you'll get Tier 2 resource requests.
So for Tier 1 people.. It costs you 90cp (6cp * 15) to make 4sp. Total gain in the 60 seconds to do it. 3 silver 10 copper.
For Tier 2 people... (and its gets even better) .. It costs ya 4.5sp (30cp * 15) to make 12sp! Yes Tier 2 people are rewarded more. Total gain in 60 seconds... 7 silver 50 copper.
At Tier 3 the rewards are even higher. But the cost to buy things of the broker are much much higher as well.. Still room to make a decent profit from what i hear tho.