Well I finally hit level 85 on Markco and am in the process of leveling blacksmithing and enchanting to full in the Twilight Highlands. To my surprise when I visited the vendors there I found an awesome gold making strategy... (see youtube video and subscribe for more updates!). [Note: The vendors have been hotfixed as of this posting to sell the items featured more frequently. This will cause a drop in prices but you should still be able to sell them for double the vendor price at the very least.]
I'll be looking to add more detailed walkthroughs in my gold guide for these particular professions and once I am finished I'll move on to leveling the next character and the next. Perhaps you would like to inform me of which characters you personally would like to see brought to 84 first? You can choose from the following who are currently at 75-80 each:
Engineer / Miner
Tailor / Leatherworker
Skinner / Miner
Alchemist / Herbalist
My other characters are either new rolls or other high level toons that are duplicates of the professions already listed. I can also switch to any profession in about a day or two depending on the number of materials listed on the auction house. I may do this with Markco early on in order to experience all the professions fairly quickly without having to level individual toons. This will greatly help me write more detailed descriptions of each profession than what is currently listed at my Cataclysm Gold Guide. Although I feel that I did a bang up job describing the various ways to make gold with every profession already, there are subtle tips I can give only after I have thoroughly invested the time into selling items for each profession.
So far I've spent 100,000 gold powerleveling jewelcrafting, blacksmithing, inscription and enchanting. Here's how blacksmithing is going so far:
Hey, when you have a million plus gold why not use it to your advantage right? It would suck to lose some of my rarer enchants, so I might just drop blacksmithing since I don't have many good rare items on markco for that profession. What do you think I should do? Should I just suck it up and level the characters? What are you going to do with your army of alts? Level them all to 84?
Enchanting Tip: Buy out level 82-84 armor for 3x the cost of dust and disenchant it. I'm making huge gold right now doing this.
Blacksmithing Tip: Folded Obsidium (if you start by buying ore, smelting and folding it) can have a pretty nice profit margin. Try it out on your server.
PS: For the prot pvp fans I am currently working on getting some gear for Markco, but it's going to be a slow grind while I focus on the gold guide.