Herbs & Flask prices

[Slerbaz]

How come the flask prices have gone up so much since Ulduar? I remember buying endless rages for 27g each on Alliance and now they have been around 70g a piece for a while. Did something happen to herb respawn timers or is it just lack of herbailists / alchemists?

[Caturdays]

pygmy suckerfish: 17g > 29g
infinity dust: 60g > 100g
moon/shadow/spellcloth: 60g > 100g