Since when Prophecy was released last year? It's a known fact that unlike collectors' weapons, collectors' armors can be salvaged. Many people already made a fortune because of it.
Theres still many more people who did not stock up on materials. Also, there are now 8 professions, so more materials will be needed.
*cough* 10 professions *cough*
But anyway, I'm just gonna wait untill the prices get to a decent price before I sell mine. There's no way for sure to tell if the prices are going to skyrocket or gradually rise.