I think that the fast markets is what you're after
I think that the fast markets is what you're after, so here's how I play them.
Step 1: Identify the Market
Remember this post on reading the graphs?Buying wow gold Use it. Find markets that fluctuate frequently and for 1-3 copper profit. Make sure that there are thousands of items being bought and sold. You can also pay attention to the top 10 trading markets that you see on the right side of the trading post upon opening it.
Step 2: Test the Waters
This could take an hour or it could take days, since not every market fluctuates at the same rate. Purchase with buy orders 99% of the time and be patient. Sometimes copper ore will change 1-2 copper in a single day, or it will take a full week. If you did your research, then you already know what the average value has been in the past month, so you can make wise decisions about purchasing. Since you're using buy orders, you can place very large buy orders below the average amount and just wait for the market to reach that point.
Step 3: Selling in Batches
Try selling 25 of the item at a time. If that goes well, move on to 50, then 100, then 250. Get a feel for how quickly you can unload the items because cancellation fees HURT. It is very unwise to just dump all your stacks of 250 without knowing how the market will react. And here's my best tip: Don't sell the same day you buy these items. That is a huge mistake! Usually the market will go back up, and that means a lot more profit / less competition to deal with.
Step 3 is where most people make the huge mistake of trying to sell the same day they buy. Many people place buy orders and come back online a day or two later to sell off their stock. If your buy orders are getting bought the same day you place them, then in most cases you do not want to sell just yet!