Quantity is king in WOW GOLD.

Here's a quick check list to see if an item is worth selling. It's simple economics, there has to be a demand for the product. Sometimes you find an item that is not a grey useless item and you think it may be worth something. However unless the item is needed by other players it will be as worthless as those grey items. When a certain item is used by other players to make weapons or enchants you can be certain that these will sell well. Of course blue and purple items are very rare and will always put some WoW gold in the bank. Quantity is king in WOW GOLD, and the items you are selling should have enough demand that people will want to purchase them in bulk. Sure it would be great to just find and sell blue and purple items all day long, but this just isn't possible. Instead look for items that people will buy stacks of if you want to make gold in WoW. Most players in who buy items in the kind of bulk are looking to quickly level up a profession, or possibly to earn credit for donating to a faction, either way this is a great way to increase your WoW gold.