I haven't posted a business idea since long time, but not because I quit making gold, but simply because I did not need to come up with anything new. Since I dropped inscription, I make gold from 3 sources:
I'd try to put this sum into perspective: I got the 30K gold from quests achievement in this July, and the 25K gold looted achievement on August. So conventional play gathered me 55K. Since I had expenses, including 220K on the server first guild lvl 25, I earned 20-30x more gold via trading than via means that are used by the average player. Please note that the trading is a player-player transaction, so by definition the average player has 0 trading balance (actually -5% due to AH cut). So I managed to get 20-30x more gold than an average guy without farming, without forcing myself, just by following the business rules, the goblin way. I also hope that via this blog I could teach you the most important steps, so you are also having more than enough without farming.
- Selling whatever odd crap I bump into during normal gameplay. It doesn't provide significant income besides the trash BoE epics from Firelands
- Selling heavenly shards. I'm practically the sole supplier of these shards on horde side, and one of the top sellers on alliance. Producing them is easy: you buy elementium and obsidium, craft Stormforged shoulders, disenchant and sell. How can all the hordies not doing this is beyond me, the profit in a single shard is over 50G and they sell in hundreds.
- Selling shoes, like the great founder of the most true political movement, the NO MA'AM. I buy 359 justice point boots from trade chat people and guildies for 700, selling them between 1000-1900G. Besides being puzzled by what other people are doing with their spare JP and honor, I also don't understand why the most useless boots are my best sellers. Rock furrow boots sell like candy, despite a 365 alternative is available for 150G after a single day of Molten Front dailies, while the second best seller is the hunter shoe, despite an equal shoe is available for 80G at Hyjal exalted and the Molten Front dailies give "old" Hyjal rep in large quantities.
PS: spare me from the "you can't use that gold, it's vanity" comments. I just figured out something really nasty what to do with it.