Sometimes that requires players to earn gear to give them greater powers that they haven’t yet unlocked. That sense of progression is at the center of what makes World of Warcraft great and so successful over the last 14 years. There should always be a balance between gaining gear and strength through lower-level content and taking on the hardest challenges the game has to offer. With Battle for Azeroth, Blizzard has missed the mark. Getting to elite status just requires grinding content that isn’t fun, instead of players demonstrating their skills.
I got a lucky 350 BoE drop just after hitting 120 about 48 hours after the expansion launched. Was able to sell it for 400k. I had chosen an alt on a different faction as a main this expansion, so I was glad to have more than the 25k I’d previously had. A couple days later I saw another 350 on the AH for 50k and flipped it for 300. That plus farming Monelite Ore as I do World Quest has me sitting on about 1mil.

Otherwise, its a pretty lackluster expansion profession-wise as there are no useful sellable gear besides Inscription trinkets. Legion had good and variety stat gear across all professions (JC could make BiS socket-rings, now JC is the worst proff ever, so sad). I hope they change stuff soon but I'm not optimistic about it. You should probably level Pandaria Engineering and Alchemy as much as you can on your characters and invest in Ghost Iron Bar/Trillium Bar transmutes to either sell Living Steel or hold them to craft Sky Golem (30-40k profit each char per month). It's hard to maintain a steady flow of GIB/TB though. I "only" have 6 engineers and my stock drys up pretty quickly.
"A lot of the challenges are less about gear level and more about doing the mechanics correctly," he said. "Having two or three percent more health or more throughput isn’t going to help you if you’re missing interrupts. Putting the time in to just practice the challenge you’re trying to overcome is probably the best use of your time once you’re at a reasonable outdoor-Argus level of gear."
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.