This video comes from player/YouTuber Kz Zuljin. By taking advantage of the gear score craze at the launch of legion, he was able to make a net work of over 20 Million gold! That window of opportunity is no longer available, BUT, the method itself still works. In the video, he explains what armor pieces to look for (101 & 110) and which gear scores to look for (835+). And due to incorrect addon guidance, people are selling these items WAY lower than they should. So basically he bought lots of these items for around 10k, and was reselling them for over 100k.
As of today, it's a little more difficult. As time went on, and the more YouTube videos came out, people eventually caught on and the competition rose significantly. But what I've noticed is, some people still aren't paying attention to the details... Some of these items have socket slots, and that'll be the only difference between "identical" items. On average an ilvl 835 items goes for around 10k - 20k on my realm. But some of those ilvl 835 items (with sockets) can still sell for up to 95k. So without realizing, people basically are listing items 50% - 75% off (like a freaking going out of business sale)! So take the basic method from this video, apply what you know about the economy, use your sound judgment, and on you should definitely see about a 25k - 100k (a week) increase in gold.
As of today, it's a little more difficult. As time went on, and the more YouTube videos came out, people eventually caught on and the competition rose significantly. But what I've noticed is, some people still aren't paying attention to the details... Some of these items have socket slots, and that'll be the only difference between "identical" items. On average an ilvl 835 items goes for around 10k - 20k on my realm. But some of those ilvl 835 items (with sockets) can still sell for up to 95k. So without realizing, people basically are listing items 50% - 75% off (like a freaking going out of business sale)! So take the basic method from this video, apply what you know about the economy, use your sound judgment, and on you should definitely see about a 25k - 100k (a week) increase in gold.