Newbies in world of warcraft to earn some money (gold) are reselling limited supply recipes this is the best way (for the begginig ) to make yourself rich with large amount of gold in your pocket. If you buy recipe you should create character ( low lvl) in a city with auction house. Then transfer your recipes ( and other sellable items ) to this character. Its a fast and easy way to make some gold.
question: why this is good interest?
- becose players are lazy and if few vendors are selling recipe why travel all WoW world to get one if you can buy it nearby in auction house?. Its simple. In other words why walk when you can buy a car?

cheers