Inscription and darkmoon decks remain highly profitable still as long as you approach it with the right mindset and understand that it is a commodity market and the goal is not necessary to sell crafted decks. For me, it's an exercise in managing purchasing Linen & Herbs below market, balancing opportunity cost of converting linen to expulsom, and mass purchasing underpriced individual cards and relisting them at a profit but under the crafting cost so that they move. That's the primary goal, and you naturally complete decks that you sell but you don't go out of your way for.
Cheap Prices: We adjust WoW Gold prices in real time according to the current currency market. Not only can you buy WoW Gold at the most reasonable prices on our site but you can also use MmoGah Coupons to save money. We provide professional services to make each customer satisfied with their purchase. MmoGah is the best choice for price and convenience.
I think that's server dependant. I make a lot of Golems, but the price on my server is high enough that you could buy all the living steel and still make about 20K (almost 200kg on AH). Its just that you proc all the way up the chain. You proc 20% of your trillium, and then 20% of your living steel. SoH and Ghost Iron are such low effort farms, too. 20% of 180 Trillium Bars at 500g is 18k more profit, 20% of 150 Living Steel at 3500g is another 105kg. That's an extra 25k profit per Golem. If they stop selling stockpile them for the next expansion, they always boom with the price of herbs. And a consistent 20% proc rate is the opposite of RNG, its extra free stuff as a benefit to completing an extra quest (not to mention for new alchemists the investment of leveling Vanilla Alchemy). You're looking for some get rich quick scheme, where the real way to build wealth is patience and volume. No market is going to be viable because you want it to be. Only because you make it viable.