As the gold price of a $20 token falls, more people with gold are willing to convert it into tokens, and fewer people with money are willing to buy gold at that rate. As the gold price rises, the value of the token begins to exceed the value of the time spent accumulating the gold for some market participants and they stop selling their gold. Meanwhile, other people with cash are enticed to enter the market because of the high amount of gold they can get for their tokens.
First up we have patch 7.3.5, which was implemented several months ago as a major shakeup to how leveling was approached. Instead of going from low to high level zones like the way the game had always operated, Blizzard opened up the map with more of a Guild Wars 2 type system -- you now have more of a choice of where to go with a scaling mechanic. But when combined with 8.0's massive stat overhaul, things got murky.
C'est très important : ne vendez pas les pièces d'équipement que vous trouverez lors de votre leveling. Il y a une nouvelle mécanique introduite dans BFA appellée Recycleur qui vous permettra d'y placer des pièces d'équipements en échange de matériaux d'artisanats, ce qui sera très importants pour vos réputations et gains de Puissance d'Azerite (dont nous allons parler après). Ce système est très similaire au Forgeron de "Diablo 3" et les habitués du jeu s'y retrouveront.
While the expansion kicks off with heavy references and scenes of this war, leveling through the Horde side of the new content it barely came up again. Except for all the times I had to mine Azerite to make sure my faction was the leader in the Azeroth version of a nuclear arms race. The Alliance side of things had some heavier references to to the war, at least in the portions I played, with one scenario in Stormsong Valley where a fleet of Horde aggressors bombed a town.
Something to keep in mind as well is that this will make enchanting materials more valuable, since it is likely most players will now simply scrap their boe greens instead of getting them disenchanted. Also redundant dungeon/raid gear can be scrapped rather than traded to the (guild) enchanter in the run. Less stuff gets disenchanted, meaning there will be less ecnhanting materials, meaning their value will rise. All the more reason to DE rather than scrap as an ecnhanter.