On the Wrath of the Lich King Classic Public Test Realm, an update went out today that changes how Flame Cap interacts as a consumable. Now when used, Flame Cap will put all other potions on a 3 minute cooldown.
Flame Cap applying a 3 minute cooldown to all Potions on the PTR
This is a significant nerf, as many Spellcasters were using Flame Cap as part of their regular raid consumables, which did cause the price to sky-rocket across many Wrath Classic realms.