This happened to me as well im now stuck in a rut making 600g'ish from the AH each month and it is NOT fun the ore market on my server dead nobody puts cobalt or saronite on anymore and when i move to that market nobody buys, ever, its starting to be fruitless and frankly im pretty sick of it i'd like some sort of saving grace but theres nothing to fall back on that i can sell without stepping all of someone elses market and getting wiped off it instantly by an automaton.

I set myself a goal to make 100k out of 1k and in two months reached it. I didn’t buy any books and didn’t know much about the ah to start with. I have a lot of people telling me the same things you guys are saying and I have one piece of advice. Work in a market you know. My first toon was a BS warrior so I knew how much plate gear was worth. I started selling ICC gear using the Sparkys Workshop addon to tell me when items were a waste of time but more importantly I knew what pieces of gear I would want. From there I started paying more attention to ore prices vs smelted and then Alchemy but it all started from that one point.

It sounds like you’re trying to go all over the market to find a nitch when I think you would be better served to learn one small part of the market and branch out from there. Start with a few items, list them on the ah at the price you want to get plus the ah cut, then set a fallback price and be willing to go to it in trade. People will start to know you and you’ll see more and more chances to buy from mat sellers. If the ore market on your server sucks go right to the farmers. Plant yourself out there in peak time and offer to buy from them for total value. They save time and you get the product.

I'm up to about 150K gold selling glyphs, you just need to properly set up Quick Auctions 3 and Auctioneer, plus be on a server that supports a good glyph market!