One of the most important points to remember when reading this or any other Gold Capped article is that advice that works well for one server's economy won't necessarily work for another. I can make money all day long selling Mysterious Fortune Cards on my server, but on your server, you might find that there's just no profit to be had in selling them -- if they even sell at all.
Certainly, there are a lot of factors responsible for this. Individual sellers have individual personalities and individual strategies. But beyond this, whether or not you're playing on a high-population server has a major effect on strategy as well. On one server, there may be 10 different people regularly trying to sell Flask of the Draconic Mind. On another, there may be no sellers -- because there aren't any buyers. Server choice matters. A lot.
We'll discuss the in and outs of both the low-population server and the high-population ones, because there are so many different strategies that work on one that don't work well on another. This week, though, we'll start with the most common scenario: The seller who find himself playing on a bustling server with what seems like an infinite amount of AH competition.