I lost 400K or so this expansion, last expansion I bought rare recipies/plans etc. and made a good profit being the first to make really high end items. This expansion that didnt work as I think product was duped early. So my million went down to about 500K and has stayed there.

Anything that shows profit one day then 20 people are on it the next day, its just really hard to do much now. Gear is easy to come by with world boss and what not. Why is someone going to pay 30K for an item that they might get at the next world boss kill? And I am sure that many items are being duped, it used to be high end items were duped but now I think stuff like ghost iron ore is being duped in mass to avoid attention.

No single stratagy will be effective, you just need to make what you can and sell it at the right time of the week or month when it will go for the most.