Trust me you can make the best through it.
This is the way how it works.
You just go to the Auction House and buy mass number of an article, and then, you have to display it over again at a greater price.
This will give other player no way of knowing the true worth of that article because there will be no other same article available for them to weigh it with.
So, they will have no choice but to buy it at your desired posted price.
This approach can be so perilous, so always watch out, and always bear in mind that upon doing this you're going to drop a quantity of money to the AH fees and to the listing fee.
So, what you need to do is that, purchase and retail the items that have no listing fee like the enchanting supplies.
The examples of enchanting supplies are the radiant shards and small brilliant shards.
I'm certain, you can easily get much money through these items because these items are high in demand yet difficult to find.
Surely you will enjoy gathering much money through it.
If you're planning to buy or sell any item you have to always consider the perfect timing.
Weekdays are the perfect time for a player to purchase an item while selling an item is preferably done during weekends.
Why? It is because during weekends there will be many people who will be playing WoW.
You can really find many promising way on how to earn great money in WoW but in my opinion the above technique is remarkably effective, so try it.