During the Burning Crusades expansion, a guild mate of mine had been running an instance with me. As we were done and left the instance he had seen that I had a drop that I scavenged of the [Moldy Leather Pants]. This was long before transmog was a gleam in the developers eye. Plus it's a grey pair of pants. But I had looked it up and there was an unofficial set. These were the times when the wow armory was being used extensively, many times to people being pests about what people wore. Some of my guild mates did not like this so tended to log off for the night with really garbage gear, clown shoes, torn pants, level 1 weapons. Mostly as an inside joke to poke at the lurkers who judged everyone by what they had showing in the armory.
My guildmate approached me and offered me 100g for the item. I too was working on the moldy set for my own comic relief. And where it may not be purple, it's not an easy drop to get, especially if you seem to be looking for it. So I politely refused and said even if I didn't need it I would feel ackward selling a grey item to a guildmate. But if I found another set of them I would hit him up and send them to him.
Fast forward to a few weeks later to running shadow labyrinth for the umpteenth time, another pair dropped. I messaged him and said did he want me to mail them to him. He said yes, COD for the 100g. I again reiterated to him that I didn't charge to guildees for items. But he basically insisted on paying for them. Later I found out that he had been planning on leaving the guild. But that's not that important. I collected my 100g from the COD and then just continued on my merry playing way.
Now, if you've made it this far, here is the reason that I told that story. Transmog has opened up a huge branch of sales to people who want certain looks. Tier gear or crafted gear that makes razor spikes, or shiny chests etc. But as I was thinking to myself, self whats something that maybe people missed. Then I remember the "Stylin'" set of hats that drop out of normal and heroic Terrokar instances as well as Cavern of Times instances.
Stylin' Purple Hat which drops from Blackheart the Inciter in Shadow Labryinth
Should I sell or should I use
Upgrade your game, and your sales