Many players who already have higher level characters create alts that they level to a certain point and then stop. Often, these twinks are level 18-19, 28-29, 38-39, etc. for the purpose of going to battlegrounds at the top of their tiers and kicking butt. Since these twinked characters are owned by higher level players with lots of cash, they usually outfit them with the best gear available at their level. Thus, items that require level 17-19, level 27-29, or any other items around this level, with good stats or dps, often sell for much higher prices than they normally would. This is especially true on an older server, and also especially true of blue (rare) items. In general, "good stats" include Cloth "of the Eagle" (for mages, warlocks), Leather "of the Monkey" (for hunters and rogues), and Mail "of the Bear" (for warriors/paladins)as well as weapons with these suffixes that can be used by the right class.
I'm very, very interested in a guide that takes into the following: 1) Dungeon finder; and 2) Heirloom items. I've never helped with a guide before, but would be open to help in collaborating on the project. With the leveling guides I've used (primarily this one) I, too, find that I level at a rate that throws the pace of the guide way off (not its fault at all, I can't say enough good stuff about the guide) to the point that I get frustrated and just queue up for dungeons.
The cloak is nice because you only need one of these instead of the previous cloak versions since the primary stat changes depending on the class it is used on. The on use trinkets for versatility, haste, or critical strike could be very strong if used together by numerous party members with the same trinket. Finally, the threat reducing trinket could be useful for solo levelers in dungeons with newer, non-heirloom geared tanks in order to not pull threat on some larger packs of enemies.
Patch 8.1.5 PTR Developer Notes 8.1.5 is coming to the PTR very soon and we have some developer notes to find out what's coming with it! The two new allied races are coming, with Zandalari Trolls and Kul Tiran Humans finally within our reach, some new invasions of the Naga variety, some updates for capital cities (new portal rooms) and WSG and AB, as well as new War Campaign quests, Wintergrasp as an Epic Battleground, the return of the Brawler's Guild and a lot more!
Enchanting is a crafting profession that allows you to enchant gear with stat increases. It also allows you to disenchant gear for crafting materials. Enchanting uses crafting materials that can only be obtained from disenchanting gear. This means the only source is either crafting yourself or buying from other players. As the profession mostly revolves around stat increases only the legion recipes are relevant. Enchanting is also a great source of obliterum. The other ways to make gold with the profession is crafting and selling enchants and doing the enchanting shuffle.
Simply put, its about expectations. Transmog is not a get rich quick scheme. You won't wake up the next day to a mailbox full of gold on day one, two or three. For most of us, it will take months to get to a point where we have to refresh our mailbox to get to the rest of the gold. Our expectations are high, and the initial results are rarely ever in the same ballpark. A few days or weeks of less than stellar results and we give up, because we lack patience. If you want/need gold now, transmog is not the solution.