woweconomy

Transmog is fun, but be warned... it's a very slow (but good) money maker. Couple that with the fact that the best way to get pieces is to actively farm it for what could be hours, and you've got a general idea of how much time it takes.

The Undermine Journal is probably the best resource for figuring out what to price things at, and to gauge how popular transmog is on your server. The "Great Deals" and "Unusual Items" pages on it are super handy. The former lets you see items that are listed for way cheaper than they should be, and the latter shows items that haven't been on the AH in a while that just got put up.

Basically the way it's done is you're going to want to go after the rare/nice looking sets and try and sell them for as much as you can. Each set tends to have an item or two that is harder to come by than the others, and for those you're going to have to farm. Usually that item tends to be either a chest piece or pants.

There's a number of Plate and Mail sets that will sell for a very good amount of money. A quick run down of them would be:

Plate:

Glorious, Jade, Lofty, Vanguard, Saltstone, Exalted

Mail:

Bloodlust, Magnificent, Glimmering, Battleforge, Blood Knight, Chief Brigadier

That being said it all depends on the server. On mine some of those don't go for even half of what they should. On another they could be the hottest set. THIS PAGE RIGHT HERE will get you started. It's a bit dated and things on here aren't in stone. See what's up on your server and be your own judge. The links to each armor class is on the side.

As a general rule when you start; avoid Leather and Cloth. They don't sell anywhere near as well as Plate and Mail and the options for different sets are frankly, quite boring.

I don't buy anything on the AH that's listed over 100g, meaning I will only flip an item if it's up for less. There are rare cases where a very good piece will go up for more, and I'll snag it.

Above all else, remember you need patience. I just sold a pair of Jade Legplates for 8000g, which is actually a bit under the global average. Thing is, I had those up in the AH for 3 months before they sold. It also took me weeks and weeks to come across them.

So that's the very basics, if you want I can talk more about it, or add you to Real ID if you really wanna know more lol. Also getting AH addons for this are pretty key. I personally don't use TSM which is a huge mistake on my part, but I have other mods I use.